Name: Guillermo Duran
Country: Argentina
Birthdate: 06.06.88, 35 years
ATP ranking: 761
TOP ranking's position: 385 (02.04.12, 103 points)
Points: 30
Prize money: 655979 $
Matches total: 498
Win: 274
%: 55.02 %
Country: Argentina
Birthdate: 06.06.88, 35 years
ATP ranking: 761
TOP ranking's position: 385 (02.04.12, 103 points)
Points: 30
Prize money: 655979 $
Matches total: 498
Win: 274
%: 55.02 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2023 | 0/1 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 0/1 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 3/5 | 0/0 | 3/5 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2017 | 10/5 | 0/0 | 7/3 | 3/2 | 0/0 | 0/0 | 0/0 |
| 2016 | 0/3 | 0/0 | 0/2 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2015 | 17/13 | 2/1 | 15/12 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2014 | 34/22 | 2/1 | 32/21 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2013 | 39/28 | 2/2 | 37/26 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2012 | 41/29 | 0/2 | 41/27 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2011 | 46/32 | 0/1 | 46/31 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2010 | 46/27 | 0/0 | 46/27 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2009 | 25/24 | 2/3 | 23/21 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2008 | 9/20 | 2/3 | 7/17 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2007 | 4/12 | 0/1 | 4/11 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2006 | 0/2 | 0/0 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 274/224 | 10/14 | 261/207 | 3/3 | 0/0 | 0/0 | 0/0 |
| perc. % | 55.02 % | 41.67 % | 55.77 % | 50 % | 0 % | 0 % | 0 % |
Guillermo Duran / scheduled / last
| no matches found |
Guillermo Duran form / surface: Clay
Guillermo Duran / surface: Clay
| 14.05.23 | q 1 | Gauthier Onclin | Guillermo Duran | 6-4, 7-5 |  | match details |  Bordeaux Challenger | Clay |
| 07.07.19 | qual. | Niklas Guttau | Guillermo Duran | 7-63, 7-63 | | match details |  Braunschweig Challenger | Clay |
| 29.09.18 | q 1 | Pedro Sakamoto | Guillermo Duran | 6-1, 6-2 | | match details |  Campinas Challenger | Clay |
| 10.09.18 | qual. | Tomas Barrios Vera | Guillermo Duran | 6-74, 6-1, 6-3 | | match details |  Szczecin Challenger | Clay |
| 09.09.18 | q 2 | Guillermo Duran | Jeroen Vanneste | 6-1, 6-2 |  | match details | ||
| 08.09.18 | q 1 | Guillermo Duran | Nikita Mashtakov | 7-5, 5-7, 7-65 | | match details | ||
| 12.05.18 | q 1 | Sam Riffice | Guillermo Duran | 6-2, 7-67 | | match details | Bordeaux Challenger | Clay |
| 06.05.18 | q 2 | Antoine Escoffier | Guillermo Duran | 6-3, 6-2 | | match details | Aix En | Clay |
| 05.05.18 | q 1 | Guillermo Duran | Clement Geens | 6-3, 6-2 | | match details | ||
| 21.04.18 | q 1 | Antoine Hoang | Guillermo Duran | 6-2, 6-3 | | match details |  Francavilla Challenger | Clay |
| 12.09.17 | 1st round | Jerzy Janowicz | Guillermo Duran | 6-4, 6-1 | | match details | Szczecin Challenger | Clay |
| 11.09.17 | qual. | Guillermo Duran | Alexander Bury | 6-1, 6-3 | | match details | ||
| 10.09.17 | q 2 | Guillermo Duran | Maxime Chazal | 6-2, 6-4 | | match details | ||
| 09.09.17 | q 1 | Guillermo Duran | Piotr Grynkowski | 6-4, 6-2 | | match details | ||
| 14.05.17 | qual. | Mackenzie Mcdonald | Guillermo Duran | 6-2, 6-0 | | match details | Bordeaux Challenger | Clay |
| 14.05.17 | q 2 | Guillermo Duran | Nicolas Jarry | 4-5, Nicolas Jarry - retired | | match details | ||
| 13.05.17 | q 1 | Guillermo Duran | Axel Michon | 2-6, 7-5, 6-1 | | match details | ||
| 08.05.17 | qual. | Elliot Benchetrit | Guillermo Duran | 6-1, 7-63 | | match details | Aix En | Clay |
| 07.05.17 | q 1 | Guillermo Duran | Romain Jouan | 6-4, 6-2 | | match details | ||
| 07.05.17 | q 2 | Guillermo Duran | Hugo Nys | 6-2, 6-1 | | match details | ||
| 10.09.16 | q 1 | Julian Reister | Guillermo Duran | 6-3, 6-2 | | match details | Szczecin Challenger | Clay |
| 02.04.16 | q 1 | Maxime Chazal | Guillermo Duran | 6-2, 6-73, 6-2 | | match details |  Marrakech | Clay |
| 17.11.15 | 1st round | Horacio Zeballos | Guillermo Duran | 6-2, 6-0 | | match details |  Montevideo Challenger | Clay |
| 15.11.15 | qual. | Guillermo Duran | Andres Molteni | 4-6, 6-3, 6-4 | | match details | ||
| 14.11.15 | q 1 | Guillermo Duran | Lucas Monterroso | 6-1, 6-0 | | match details | ||
| 14.11.15 | q 2 | Guillermo Duran | Gonzalo Villanueva | 6-3, 7-63 | | match details | ||
| 31.10.15 | q 1 | Pedro Sakamoto | Guillermo Duran | 4-6, 6-3, 3-2, Guillermo Duran - retired | | match details |  Guayaquil Challenger | Clay |
| 12.07.15 | q 2 | Petr Michnev | Guillermo Duran | 6-4, 1-0, Guillermo Duran - retired | | match details | Poznan Challenger | Clay |
| 11.07.15 | q 1 | Guillermo Duran | Bastian Malla | 6-72, 6-2, 6-2 | | match details | ||
| 31.05.15 | q 1 | Kevin Krawietz | Guillermo Duran | 6-1, 6-3 | | match details | Furth Challenger | Clay |
| 25.05.15 | q 2 | Cristian Garin | Guillermo Duran | 6-2, 6-4 | | match details | Vicenza Challenger | Clay |
| 24.05.15 | q 1 | Guillermo Duran | Viktor Galovic | 6-4, 6-75, 7-5 | | match details | ||
| 16.05.15 | q 1 | Guillermo Duran | Alexander Bublik | Alexander Bublik - walk over | | match details | Nice | Clay |
| 16.05.15 | q 2 | Quentin Halys | Guillermo Duran | 6-4, 7-63 | | match details | ||
| 21.04.15 | 1st round | Tennys Sandgren | Guillermo Duran | 7-5, 4-6, 7-67 | | match details |  Savannah Challenger | Clay |
| 20.04.15 | qual. | Guillermo Duran | Takanyi Garanganga | 6-2, 6-3 | | match details | ||
| 19.04.15 | q 2 | Guillermo Duran | Alexander Ward | 4-2, Alexander Ward - retired | | match details | ||
| 18.04.15 | q 1 | Guillermo Duran | Stephen Stege | 6-4, 6-1 | | match details | ||
| 30.03.15 | qual. | Juan Sebastian Gomez | Guillermo Duran | 3-6, 6-1, 6-4 | | match details |  San Luis | Clay |
| 29.03.15 | q 1 | Guillermo Duran | Alexander Ward | 6-4, 6-4 | | match details | ||
| 29.03.15 | q 2 | Guillermo Duran | Andres Alvarez Cerdan | 6-2, 6-2 | | match details | ||
| 08.03.15 | q 2 | Gianluigi Quinzi | Guillermo Duran | 6-1, 0-6, 6-3 | | match details |  Santiago Challenger | Clay |
| 07.03.15 | q 1 | Guillermo Duran | Caio Silva | 6-4, 6-3 | | match details | ||
| 23.02.15 | qual. | Marco Cecchinato | Guillermo Duran | 6-1, 7-60 | | match details |  Buenos Aires | Clay |
| 22.02.15 | q 2 | Guillermo Duran | Francisco Bahamonde | 6-0, 4-6, 6-3 | | match details | ||
| 21.02.15 | q 1 | Guillermo Duran | Marco Trungelliti | 6-3, 6-1 | | match details | ||
| 07.02.15 | q 1 | Romain Arneodo | Guillermo Duran | 6-2, 6-2 | | match details |  Santo Domingo | Clay |
| 25.01.15 | q 2 | Guilherme Clezar | Guillermo Duran | 6-77, 6-2, 7-68 | | match details |  Bucaramanga Challenger | Clay |
| 25.01.15 | q 1 | Guillermo Duran | Juan Sebastian Gomez | 7-5, 6-4 | | match details | ||
| 08.12.14 | 1st round | Guillermo Duran | Gianluigi Quinzi | 6-0, 2-6, 6-3 | | match details | Argentina F20 | Clay |
| 08.12.14 | 2nd round | Andres Molteni | Guillermo Duran | 6-1, 6-2 | | match details | ||
| 01.12.14 | 2nd round | Guillermo Duran | Martin Alund | 6-3, 4-6, 6-4 | | match details | Argentina F19 | Clay |
| 01.12.14 | 1/4 | Guillermo Duran | Hernan Casanova | 7-5, 6-2 | | match details | ||
| 01.12.14 | fin | Grzegorz Panfil | Guillermo Duran | 7-5, 6-4 | | match details | ||
| 01.12.14 | 1/2 | Guillermo Duran | Federico Coria | 3-6, 6-2, 6-4 | | match details | ||
| 01.12.14 | 1st round | Guillermo Duran | Martin Rondina | 6-3, 6-3 | | match details | ||
| 19.10.14 | q 2 | Martin Cuevas | Guillermo Duran | 6-0, 4-6, 7-5 | | match details | Cordoba Challenger | Clay |
| 18.10.14 | q 1 | Guillermo Duran | Ryusei Makiguchi | 6-3, 6-3 | | match details | ||
| 22.09.14 | qual. | Daniel Dutra Da Silva | Guillermo Duran | 6-74, 6-1, 7-65 | | match details | Porto Alegre | Clay |
| 21.09.14 | q 2 | Guillermo Duran | Carlos Eduardo Severino | 6-2, 1-6, 6-1 | | match details | ||
| 20.09.14 | q 1 | Guillermo Duran | Marcos Facundo-Oliveira | 6-0, 6-1 | | match details | ||
| 13.09.14 | q 1 | Osni Nery Junior | Guillermo Duran | 6-3, 7-5 | | match details | Campinas Challenger | Clay |
| 01.09.14 | 1/2 | Federico Coria | Guillermo Duran | 6-2, 6-2 | | match details | Argentina F16 | Clay |
| 01.09.14 | 2nd round | Guillermo Duran | Luciano Doria | 6-2, 6-3 | | match details | ||
| 01.09.14 | 1/4 | Guillermo Duran | Mariano Kestelboim | 6-3, 6-3 | | match details | ||
| 01.09.14 | 1st round | Guillermo Duran | Rodrigo Arus | 6-2, 6-4 | | match details | ||
| 04.08.14 | qual. | Wilson Leite | Guillermo Duran | 3-6, 6-2, 6-4 | | match details |  San Marino | Clay |
| 03.08.14 | q 2 | Guillermo Duran | Michael Venus | 6-4, 6-2 | | match details | ||
| 02.08.14 | q 1 | Guillermo Duran | Pietro Rondoni | 6-3, 6-1 | | match details | ||
| 27.07.14 | q 2 | Omar Giacalone | Guillermo Duran | 6-4, 6-4 | | match details | Cortina Challenger | Clay |
| 19.07.14 | q 1 | Boris Pashanski | Guillermo Duran | 6-2, 7-5 | | match details |  Umag | Clay |
| 03.07.14 | 2nd round | Ruben Ramirez-Hidalgo | Guillermo Duran | 6-1, 6-1 | | match details | Todi Challenger | Clay |
| 02.07.14 | 1st round | Guillermo Duran | Andrea Arnaboldi | 4-6, 5-1, Andrea Arnaboldi - retired | | match details | ||
| 30.06.14 | q 2 | Guillermo Duran | Artem Smirnov | 6-3, 7-68 | | match details | ||
| 30.06.14 | qual. | Guillermo Duran | Ricardo Rodriguez-Pace | 6-3, 6-3 | | match details | ||
| 29.06.14 | q 1 | Guillermo Duran | Giorgio Ruello | 6-1, 6-1 | | match details | ||
| 07.06.14 | q 1 | Yanais Laurent | Guillermo Duran | 3-6, 7-61, 6-3 | | match details | Blois Challenger | Clay |
| 12.05.14 | qual. | Andrea Collarini | Guillermo Duran | 6-4, 6-4 | | match details | Bordeaux Challenger | Clay |
| 11.05.14 | q 2 | Guillermo Duran | Lamine Ouahab | 7-64, 6-0 | | match details | ||
| 10.05.14 | q 1 | Guillermo Duran | Romain Arneodo | 6-3, 6-2 | | match details | ||
| 04.05.14 | q 2 | Kevin Krawietz | Guillermo Duran | 6-2, 6-2 | | match details | Rome Challenger | Clay |
| 03.05.14 | q 1 | Guillermo Duran | Piotr Gadomski | 6-4, 6-1 | | match details | ||
| 21.04.14 | qual. | Emilio Gomez | Guillermo Duran | 6-3, 6-4 | | match details | Santos Challenger | Clay |
| 20.04.14 | q 2 | Guillermo Duran | Gabriel Alejandro Hidalgo | 7-610, 6-0 | | match details | ||
| 19.04.14 | q 1 | Guillermo Duran | Joao Pedro Sorgi | 6-1, 6-2 | | match details | ||
| 17.04.14 | 2nd round | Blaz Rola | Guillermo Duran | 7-5, 6-3 | | match details | Sao Paulo | Clay |
| 16.04.14 | 1st round | Guillermo Duran | Fernando Romboli | 6-1, 6-2 | | match details | ||
| 14.04.14 | qual. | Guillermo Duran | Frederico Ferreira Silva | 6-1, 3-6, 6-3 | | match details | ||
| 13.04.14 | q 2 | Guillermo Duran | Markus Eriksson | 6-1, 5-7, 6-0 | | match details | ||
| 12.04.14 | q 1 | Guillermo Duran | Lucas Koelle | 6-1, 6-4 | | match details | ||
| 06.04.14 | q 2 | Gabriel Alejandro Hidalgo | Guillermo Duran | 6-2, 4-6, 7-64 | | match details | Itajai Challenger | Clay |
| 05.04.14 | q 1 | Guillermo Duran | Leonardo Kirche | 6-4, 6-2 | | match details | ||
| 24.03.14 | qual. | Jason Murray Kubler | Guillermo Duran | 6-3, 6-3 | | match details | Barranquilla Challenger | Clay |
| 23.03.14 | q 1 | Guillermo Duran | Hsien-Yin Peng | 6-0, 6-3 | | match details | ||
| 23.03.14 | q 2 | Guillermo Duran | Pascal Brunner | 5-7, 6-1, 7-61 | | match details | ||
| 15.03.14 | q 1 | Miguel-Angel Reyes-Varela | Guillermo Duran | 7-65, 7-5 | | match details |  Panama City | Clay |
| 25.02.14 | 1st round | Andrea Collarini | Guillermo Duran | 5-7, 6-4, 6-4 | | match details | Salinas Challenger | Clay |
| 23.02.14 | q 2 | Guillermo Duran | Nicolas Kicker | 6-4, 6-4 | | match details | ||
| 23.02.14 | qual. | Guillermo Duran | Luis David Martinez | 6-1, 6-4 | | match details | ||
| 22.02.14 | q 1 | Guillermo Duran | Tomas Lipovsek Puches | 6-4, 4-6, 7-5 | | match details | ||
| 10.02.14 | 1st round | Pablo Galdon | Guillermo Duran | 3-6, 7-65, 6-4 | | match details | Argentina F3 | Clay |
| 03.02.14 | 1st round | Patricio Heras | Guillermo Duran | 6-1, 6-2 | | match details | Argentina F2 | Clay |
| 09.12.13 | 1/4 | Guillermo Duran | Patricio Heras | 6-4, 4-6, 6-2 | | match details | Brazil F20 | Clay |
| 09.12.13 | 1/2 | Jose Pereira | Guillermo Duran | 6-4, 6-4 | | match details | ||
| 09.12.13 | 1st round | Guillermo Duran | Eduardo Dischinger | 6-1, 7-63 | | match details | ||
| 09.12.13 | 2nd round | Guillermo Duran | Juan Pablo Paz | 6-3, 6-4 | | match details | ||
| 13.11.13 | 2nd round | Victor Estrella | Guillermo Duran | 6-4, 6-3 | | match details | Guayaquil Challenger | Clay |
| 12.11.13 | 1st round | Guillermo Duran | Fabricio Neis | 6-2, 2-6, 6-2 | | match details | ||
| 10.11.13 | qual. | Guillermo Duran | Stephan Fransen | 7-5, 6-2 | | match details | ||
| 09.11.13 | q 2 | Guillermo Duran | Nicolas Edwin Palacio Rievero | 6-0, 6-2 | | match details | ||
| 03.11.13 | q 2 | Jonas Luetjen | Guillermo Duran | 3-6, 6-1, 7-65 | | match details | Bogota Challenger | Clay |
| 02.11.13 | q 1 | Guillermo Duran | Hugo Dellien | 4-6, 6-4, 7-65 | | match details | ||
| 26.10.13 | q 1 | Pedro Cachin | Guillermo Duran | 6-0, 1-6, 6-3 | | match details | Montevideo Challenger | Clay |
| 19.10.13 | q 1 | Gabriel Alejandro Hidalgo | Guillermo Duran | 7-63, 6-4 | | match details | Buenos Aires | Clay |
| 08.10.13 | 1st round | Diego Sebastian Schwartzman | Guillermo Duran | 4-6, 6-0, 6-3 | | match details | San Juan | Clay |
| 22.09.13 | q 2 | Christian Lindell | Guillermo Duran | 6-3, 2-6, 7-65 | | match details | Porto Alegre | Clay |
| 22.09.13 | q 1 | Guillermo Duran | Guilherme Fachin Da Cunha | Guilherme Fachin Da Cunha - walk over | | match details | ||
| 19.09.13 | 2nd round | Guilherme Clezar | Guillermo Duran | 6-4, 6-3 | | match details | Campinas Challenger | Clay |
| 18.09.13 | 1st round | Guillermo Duran | Ricardo Hocevar | 7-65, 6-2 | | match details | ||
| 16.09.13 | qual. | Guillermo Duran | Fabricio Ribeiro | 6-1, 6-2 | | match details | ||
| 15.09.13 | q 2 | Guillermo Duran | Bruno Figlia | 6-0, 6-1 | | match details | ||
| 14.09.13 | q 1 | Guillermo Duran | Diego Burger Araujo Santos | 6-0, 6-0 | | match details | ||
| 02.09.13 | 1/4 | Guillermo Duran | Dante Gennaro | 6-76, 6-2, 6-3 | | match details | Argentina F17 | Clay |
| 02.09.13 | 1st round | Guillermo Duran | Juan Ignacio Ameal | 6-1, 6-3 | | match details | ||
| 02.09.13 | 1/2 | Gabriel Alejandro Hidalgo | Guillermo Duran | 6-2, 6-4 | | match details | ||
| 02.09.13 | 2nd round | Guillermo Duran | Luciano Doria | 6-2, 6-2 | | match details | ||
| 26.08.13 | 1/4 | Guillermo Duran | Federico Coria | 4-6, 7-5, 6-2 | | match details | Argentina F16 | Clay |
| 26.08.13 | 1/2 | Pedro Cachin | Guillermo Duran | 6-4, 6-3 | | match details | ||
| 26.08.13 | 1st round | Guillermo Duran | Inaki Gimenez Pilutik | 7-64, 6-3 | | match details | ||
| 26.08.13 | 2nd round | Guillermo Duran | Juan Ignacio Ameal | 7-5, 7-5 | | match details | ||
| 05.08.13 | qual. | Bastian Malla | Guillermo Duran | 4-6, 6-4, 7-5 | | match details | Rio De | Clay |
| 04.08.13 | q 2 | Guillermo Duran | Lucas Meirelles Guitarrari | 6-2, 7-64 | | match details | ||
| 03.08.13 | q 1 | Guillermo Duran | Enzo Kohn | 6-1, 6-2 | | match details | ||
| 23.07.13 | 1st round | Norbert Gombos | Guillermo Duran | 6-3, 6-3 | | match details | Orbetello Challenger | Clay |
| 21.07.13 | qual. | Guillermo Duran | Emanuele Molina | 6-1, 6-4 | | match details | ||
| 20.07.13 | q 2 | Guillermo Duran | Sasha Merzetti | 6-0, 6-0 | | match details | ||
| 06.07.13 | q 1 | David Souto | Guillermo Duran | 6-0, 6-72, 7-67 | | match details | San Benedetto | Clay |
| 01.07.13 | q 2 | Guillermo Duran | Marco Stancati | 6-1, 6-2 | | match details | Todi Challenger | Clay |
| 01.07.13 | qual. | Adelchi Virgili | Guillermo Duran | 6-76, 6-4, 6-4 | | match details | ||
| 30.06.13 | q 1 | Guillermo Duran | Gabriele Broccucci | 6-0, 6-0 | | match details | ||
| 24.06.13 | 1st round | Antal Van Der Duim | Guillermo Duran | 6-3, 6-3 | | match details |  Netherlands F3 | Clay |
| 17.06.13 | qual. | Andrej Martin | Guillermo Duran | 6-1, 5-7, 6-0 | | match details | Milan Challenger | Clay |
| 16.06.13 | q 2 | Guillermo Duran | Alexandre Sidorenko | 6-3, 2-0, Alexandre Sidorenko - retired | | match details | ||
| 15.06.13 | q 1 | Guillermo Duran | Marin Draganja | 6-4, 2-1, Marin Draganja - retired | | match details | ||
| 03.06.13 | 1/4 | Andrea Collarini | Guillermo Duran | 7-5, 6-3 | | match details | Argentina F9 | Clay |
| 03.06.13 | 1st round | Guillermo Duran | Jose Maria Paniagua | 6-0, 2-6, 7-5 | | match details | ||
| 03.06.13 | 2nd round | Guillermo Duran | Facundo Mena | 6-76, 6-3, 7-64 | | match details | ||
| 20.05.13 | 1st round | Guillermo Duran | Bruno Luciano Mazziotti | 6-77, 7-62, 6-2 | | match details | Argentina F7 | Clay |
| 20.05.13 | 2nd round | Mariano Urli | Guillermo Duran | 6-2, 6-4 | | match details | ||
| 29.04.13 | 1/4 | James Duckworth | Guillermo Duran | 6-0, 6-4 | | match details | Chile F3 | Clay |
| 29.04.13 | 1st round | Guillermo Duran | Guilherme Hadlich | 6-1, 6-2 | | match details | ||
| 29.04.13 | 2nd round | Guillermo Duran | Ricardo Urzua-Rivera | 7-65, 4-6, 6-0 | | match details | ||
| 21.04.13 | q 2 | Hans Podlipnik-Castillo | Guillermo Duran | 3-6, 6-1, 6-3 | | match details | Sao Paulo | Clay |
| 20.04.13 | q 1 | Guillermo Duran | Christian Lindell | 6-4, 6-3 | | match details | ||
| 15.04.13 | q 2 | Marc Giner | Guillermo Duran | 6-2, 6-4 | | match details | Santos Challenger | Clay |
| 14.04.13 | q 1 | Guillermo Duran | Gabriel Goncalves | 6-0, 6-0 | | match details | ||
| 06.04.13 | q 1 | Diego Junqueira | Guillermo Duran | 2-6, 6-1, 6-3 | | match details | Itajai Challenger | Clay |
| 24.03.13 | q 2 | Juan Carlos Saez | Guillermo Duran | 7-66, 5-7, 6-4 | | match details | Pereira Challenger | Clay |
| 24.03.13 | q 1 | Guillermo Duran | Mateo Andres Ruiz Naranjo | 6-4, 6-2 | | match details | ||
| 03.03.13 | qual. | Juan Carlos Saez | Guillermo Duran | 6-4, 6-3 | | match details | Santiago Challenger | Clay |
| 03.03.13 | q 2 | Guillermo Duran | Diego Junqueira | 7-63, 4-6, 6-4 | | match details | ||
| 02.03.13 | q 1 | Guillermo Duran | Tomas Marini | 6-0, 6-2 | | match details | ||
| 24.02.13 | q 2 | Jean Andersen | Guillermo Duran | 7-65, 0-6, 6-1 | | match details | Salinas Challenger | Clay |
| 23.02.13 | q 1 | Guillermo Duran | Gonzalo Quintana | 6-1, 6-0 | | match details | ||
| 16.02.13 | q 1 | Dustin Brown | Guillermo Duran | 6-4, 3-6, 7-62 | | match details | Buenos Aires | Clay |
| 17.12.12 | 1/4 | Hans Podlipnik-Castillo | Guillermo Duran | 6-2, 6-3 | | match details | Chile F16 | Clay |
| 17.12.12 | 1st round | Guillermo Duran | Facundo Mena | 6-4, 5-7, 6-2 | | match details | ||
| 17.12.12 | 2nd round | Guillermo Duran | Vicente Bronstein | 6-1, 6-1 | | match details | ||
| 03.12.12 | 1/4 | Guillermo Duran | Andres Molteni | 6-2, 6-2 | | match details | Argentina F28 | Clay |
| 03.12.12 | 1/2 | Guillermo Duran | Leandro Migani | 7-65, 6-2 | | match details | ||
| 03.12.12 | 1st round | Guillermo Duran | Joaquin-Jesus Monteferrario | 6-1, 6-1 | | match details | ||
| 03.12.12 | fin | Guillermo Duran | Gabriel Alejandro Hidalgo | 6-2, 7-5 | | match details | ||
| 03.12.12 | 2nd round | Guillermo Duran | Juan Vazquez-Valenzuela | 6-3, 4-6, 6-2 | | match details | ||
| 26.11.12 | 1/4 | Guillermo Duran | Juan Vazquez-Valenzuela | 6-4, 7-5 | | match details | Argentina F27 | Clay |
| 26.11.12 | 1st round | Guillermo Duran | Sergio Galdos | 6-3, 7-63 | | match details | ||
| 26.11.12 | 1/2 | Andrea Collarini | Guillermo Duran | 4-6, 6-2, 6-3 | | match details | ||
| 26.11.12 | 2nd round | Guillermo Duran | Tomas Lipovsek Puches | 7-5, 7-62 | | match details | ||
| 19.11.12 | 1/2 | Guillermo Duran | Andrea Collarini | 1-6, 7-5, 6-3 | | match details | Argentina F26 | Clay |
| 19.11.12 | 1st round | Guillermo Duran | Mauricio Perez Mota | 6-2, 6-2 | | match details | ||
| 19.11.12 | fin | Renzo Olivo | Guillermo Duran | 3-6, 6-2, 6-4 | | match details | ||
| 19.11.12 | 2nd round | Guillermo Duran | Facundo Manzanares | 6-1, 6-3 | | match details | ||
| 19.11.12 | 1/4 | Guillermo Duran | Leandro Migani | 6-3, 6-3 | | match details | ||
| 29.10.12 | q 1 | Guillermo Duran | Sergio Galdos | 6-2, 6-2 | | match details | Montevideo Challenger | Clay |
| 29.10.12 | q 2 | Diego Junqueira | Guillermo Duran | 7-5, 6-4 | | match details | ||
| 16.10.12 | 1st round | Javier Marti | Guillermo Duran | 6-3, 6-2 | | match details | Villa Allende | Clay |
| 03.10.12 | 2nd round | Martin Alund | Guillermo Duran | 6-71, 7-64, 6-1 | | match details | Quito Challenger | Clay |
| 01.10.12 | 1st round | Guillermo Duran | Kevin Kim | 6-2, 6-4 | | match details | ||
| 27.08.12 | 2nd round | Joaquin-Jesus Monteferrario | Guillermo Duran | 4-6, 6-2, 7-5 | | match details | Argentina F22 | Clay |
| 27.08.12 | 1st round | Guillermo Duran | Oscar Almada | 6-4, 6-4 | | match details | ||
| 20.08.12 | 2nd round | Guillermo Duran | Joss Espasandin | 6-4, 6-3 | | match details | Argentina F21 | Clay |
| 20.08.12 | 1st round | Guillermo Duran | Hernan Casanova | 6-0, 6-2 | | match details | ||
| 20.08.12 | 1/4 | Pablo Galdon | Guillermo Duran | 6-4, 7-64 | | match details | ||
| 13.08.12 | 1st round | Guillermo Duran | Eduardo Piragine | 7-63, 6-1 | | match details | Argentina F20 | Clay |
| 13.08.12 | 2nd round | Guillermo Duran | Mauricio Perez Mota | 3-6, 6-3, 6-4 | | match details | ||
| 13.08.12 | 1/4 | Andres Molteni | Guillermo Duran | 6-4, 6-4 | | match details | ||
| 16.07.12 | 1st round | Guillermo Duran | Mauricio Perez Mota | 6-4, 6-1 | | match details | Argentina F18 | Clay |
| 16.07.12 | 1/2 | Renzo Olivo | Guillermo Duran | 6-3, 6-1 | | match details | ||
| 16.07.12 | 2nd round | Guillermo Duran | Mariano Urli | 4-6, 6-0, 6-2 | | match details | ||
| 16.07.12 | 1/4 | Guillermo Duran | Diego Hidalgo | 6-3, 6-3 | | match details | ||
| 07.07.12 | q 1 | Juan Sebastian Gomez | Guillermo Duran | 6-3, 6-3 | | match details | Bogota Challenger | Clay |
| 04.07.12 | 2nd round | Facundo Arguello | Guillermo Duran | 6-4, 6-3 | | match details |  Lima Challenger | Clay |
| 02.07.12 | 1st round | Guillermo Duran | Ricardo Siggia | 1-6, 6-4, 7-5 | | match details | ||
| 18.06.12 | 1st round | Guillermo Duran | Augusto Laranja | 6-3, 6-2 | | match details | Argentina F14 | Clay |
| 18.06.12 | 1/4 | Facundo Arguello | Guillermo Duran | 6-3, 6-4 | | match details | ||
| 18.06.12 | 2nd round | Guillermo Duran | Juan Vazquez-Valenzuela | 7-5, 6-72, 6-4 | | match details | ||
| 11.06.12 | 1/4 | Bruno Sant'Anna | Guillermo Duran | 6-4, 6-3 | | match details | Argentina F12 | Clay |
| 11.06.12 | 1st round | Guillermo Duran | Julio Cesar Vasquez Bonilla | 6-1, 6-3 | | match details | ||
| 11.06.12 | 2nd round | Guillermo Duran | Fabricio Burdisso | 6-3, 6-0 | | match details | ||
| 04.06.12 | 1st round | Guillermo Duran | Matias Del Rio | 6-3, 6-0 | | match details | Argentina F11 | Clay |
| 04.06.12 | 2nd round | Guillermo Duran | Franco Agamenone | 6-2, 6-3 | | match details | ||
| 04.06.12 | 1/4 | Facundo Arguello | Guillermo Duran | 6-3, 6-3 | | match details | ||
| 23.04.12 | q 2 | Dino Marcan | Guillermo Duran | 7-5, 6-0 | | match details | Sao Paulo | Clay |
| 23.04.12 | q 1 | Guillermo Duran | Marcelo Tebet Filho | 6-2, 6-1 | | match details | ||
| 14.04.12 | q 1 | Walter Trusendi | Guillermo Duran | 4-6, 7-61, 7-5 | | match details | Santos Challenger | Clay |
| 09.04.12 | q 2 | Michael Quintero | Guillermo Duran | 6-71, 6-4, 6-3 | | match details | Pereira Challenger | Clay |
| 26.03.12 | 1st round | Guillermo Duran | Juan Pablo Ortiz | 3-6, 6-1, 6-4 | | match details | Argentina F5 | Clay |
| 26.03.12 | 2nd round | Guillermo Duran | Hernan Casanova | 7-5, 6-2 | | match details | ||
| 26.03.12 | 1/4 | Nicolas Pastor | Guillermo Duran | 6-3, 6-0 | | match details | ||
| 19.03.12 | 2nd round | Nicolas Kicker | Guillermo Duran | 6-3, 6-2 | | match details | Argentina F4 | Clay |
| 19.03.12 | 1st round | Guillermo Duran | Agustin Visokolskis | 6-0, 7-64 | | match details | ||
| 12.03.12 | 1st round | Guido Andreozzi | Guillermo Duran | 6-3, 6-1 | | match details | Argentina F3 | Clay |
| 05.03.12 | q 1 | Guillermo Duran | Tristan-Samuel Weissborn | 6-2, 4-6, 6-1 | | match details | Santiago Challenger | Clay |
| 05.03.12 | qual. | Fernando Romboli | Guillermo Duran | 6-2, 7-5 | | match details | ||
| 05.03.12 | q 2 | Guillermo Duran | Daniel Garza | 6-1, 6-3 | | match details | ||
| 29.02.12 | 2nd round | Martin Alund | Guillermo Duran | 6-0, 7-60 | | match details | Salinas Challenger | Clay |
| 28.02.12 | 1st round | Guillermo Duran | Juan Sebastian Carvajal Jurado | 6-2, 6-0 | | match details | ||
| 27.02.12 | q 2 | Guillermo Duran | Martin Rojas | 6-1, 6-0 | | match details | ||
| 27.02.12 | qual. | Guillermo Duran | Mauricio Echazu | 6-4, 7-63 | | match details | ||
| 18.02.12 | q 1 | Eduardo Schwank | Guillermo Duran | 7-62, 6-3 | | match details | Buenos Aires | Clay |
| 11.02.12 | q 1 | Paul Capdeville | Guillermo Duran | 2-6, 6-4, 6-2 | | match details | Sao Paulo | Clay |
| 28.01.12 | q 1 | Eduardo Schwank | Guillermo Duran | 6-3, 6-1 | | match details | Vina del | Clay |
| 23.01.12 | q 1 | Guillermo Duran | Manuel Barros | 4-6, 6-4, 6-1 | | match details | Bucaramanga Challenger | Clay |
| 23.01.12 | q 2 | Michael Quintero | Guillermo Duran | 1-6, 6-1, 6-2 | | match details | ||
| 05.12.11 | 1/4 | Guillermo Duran | Valentin Florez | 4-6, 6-3, 7-66 | | match details | Brazil F42 | Clay |
| 05.12.11 | 1/2 | Guillermo Duran | Martin Cuevas | 6-76, 6-1, 7-65 | | match details | ||
| 05.12.11 | fin | Martin Alund | Guillermo Duran | 3-6, 6-3, 6-4 | | match details | ||
| 05.12.11 | 1st round | Guillermo Duran | Matias Salinas | 7-5, 6-2 | | match details | ||
| 05.12.11 | 2nd round | Guillermo Duran | Joshua Zavala | 7-5, 6-2 | | match details | ||
| 28.11.11 | 2nd round | Guillermo Hormazabal | Guillermo Duran | 4-6, 6-2, 6-2 | | match details | Chile F15 | Clay |
| 28.11.11 | 1st round | Guillermo Duran | Juan-Pablo Amado | 5-1, Juan-Pablo Amado - retired | | match details | ||
| 22.11.11 | 1st round | Sebastian Decoud | Guillermo Duran | 6-1, 4-6, 6-4 | | match details | Guayaquil Challenger | Clay |
| 21.11.11 | qual. | Guillermo Duran | Ivan Endara | 6-4, 6-4 | | match details | ||
| 21.11.11 | q 2 | Guillermo Duran | Carlos Avellan | 6-3, 6-4 | | match details | ||
| 14.11.11 | q 1 | Renzo Olivo | Guillermo Duran | 6-70, 6-4, 7-64 | | match details | Montevideo Challenger | Clay |
| 07.11.11 | q 2 | Mauricio Echazu | Guillermo Duran | 6-3, 1-6, 7-65 | | match details | Buenos Aires | Clay |
| 07.11.11 | q 1 | Guillermo Duran | Juan-Pablo Amado | 6-4, 2-6, 6-2 | | match details | ||
| 24.10.11 | 1/2 | Renzo Olivo | Guillermo Duran | 6-2, 6-2 | | match details | Argentina F21 | Clay |
| 24.10.11 | 1/4 | Guillermo Duran | Andrea Collarini | 6-1, 6-4 | | match details | ||
| 24.10.11 | 1st round | Guillermo Duran | Andres Ceppo | 6-4, 6-3 | | match details | ||
| 24.10.11 | 2nd round | Guillermo Duran | Guillermo Bujniewicz | 6-4, 6-4 | | match details | ||
| 18.10.11 | 1st round | Benjamin Balleret | Guillermo Duran | 4-6, 6-3, 6-2 | | match details | Quito Challenger | Clay |
| 26.09.11 | 1/2 | Guillermo Duran | Patricio Heras | 7-5, 6-2 | | match details | Argentina F17 | Clay |
| 26.09.11 | 1st round | Guillermo Duran | Nicolas Alejandro De Gregorio | 7-66, 6-3 | | match details | ||
| 26.09.11 | fin | Gaston-Arturo Grimolizzi | Guillermo Duran | 6-3, 7-67 | | match details | ||
| 26.09.11 | 2nd round | Guillermo Duran | Agustin Picco | 6-4, 4-6, 6-3 | | match details | ||
| 26.09.11 | 1/4 | Guillermo Duran | Leandro Migani | 6-4, 4-6, 7-5 | | match details | ||
| 20.09.11 | 1st round | Guido Andreozzi | Guillermo Duran | 7-61, 6-3 | | match details | Campinas Challenger | Clay |
| 15.09.11 | 2nd round | Eduardo Schwank | Guillermo Duran | 6-0, 6-0 | | match details | Belo Horizonte | Clay |
| 13.09.11 | 1st round | Guillermo Duran | Gabriel Dias | 1-6, 7-5, 7-5 | | match details | ||
| 07.09.11 | 1st round | Marco Crugnola | Guillermo Duran | 6-2, 6-3 | | match details | Genova Challenger | Clay |
| 05.09.11 | q 2 | Guillermo Duran | Oscar Sabate-Bretos | 4-6, 6-3, 6-4 | | match details | ||
| 05.09.11 | qual. | Guillermo Duran | Yann Marti | 5-7, 6-4, 6-4 | | match details | ||
| 30.08.11 | 1st round | Benoit Paire | Guillermo Duran | 6-1, 6-2 | | match details | Como Challenger | Clay |
| 29.08.11 | qual. | Antonio Comporto | Guillermo Duran | 3-6, 7-5, 6-1 | | match details | ||
| 29.08.11 | q 1 | Guillermo Duran | Nicola Ghedin | 6-0, 4-6, 6-2 | | match details | ||
| 29.08.11 | q 2 | Guillermo Duran | Laurent Recouderc | 4-6, 7-5, 7-5 | | match details | ||
| 22.08.11 | q 1 | Guillermo Duran | Enrico Berta | 6-1, 6-1 | | match details | Manerbio Challenger | Clay |
| 22.08.11 | q 2 | Michael Lammer | Guillermo Duran | 6-1, 6-3 | | match details | ||
| 15.08.11 | q 2 | Mauro Commisso | Guillermo Duran | 6-4, 6-1 | | match details | Cordenons Challenger | Clay |
| 11.07.11 | 1st round | Robert Farah | Guillermo Duran | 6-1, 7-65 | | match details | Bogota Challenger | Clay |
| 11.07.11 | qual. | Guillermo Duran | Felipe Rojas | 6-0, 3-6, 6-2 | | match details | ||
| 11.07.11 | q 1 | Guillermo Duran | Francisco Mendieta | 6-1, 6-2 | | match details | ||
| 27.06.11 | 1/4 | Guillermo Duran | Renzo Olivo | 7-65, 4-6, 7-5 | | match details | Argentina F9 | Clay |
| 27.06.11 | 1/2 | Guillermo Duran | Kevin Konfederak | 7-67, 4-6, 6-2 | | match details | ||
| 27.06.11 | 1st round | Guillermo Duran | Franco Tarantino | 6-3, 6-1 | | match details | ||
| 27.06.11 | fin | Facundo Arguello | Guillermo Duran | 6-4, 6-2 | | match details | ||
| 27.06.11 | 2nd round | Guillermo Duran | Andres Ceppo | 3-6, 6-3, 6-2 | | match details | ||
| 20.06.11 | 1st round | Guillermo Duran | Joaquin-Jesus Monteferrario | 6-1, 6-2 | | match details | Argentina F8 | Clay |
| 20.06.11 | 2nd round | Renzo Olivo | Guillermo Duran | 7-64, 7-62 | | match details | ||
| 13.06.11 | 1st round | Guillermo Duran | Rodrigo Sanchez | 6-3, 7-65 | | match details | Argentina F7 | Clay |
| 13.06.11 | 2nd round | Guillermo Duran | Cristian Benedetti | 6-2, 6-1 | | match details | ||
| 13.06.11 | 1/4 | Guillermo Duran | Guido Pella | 6-1, 1-6, 6-4 | | match details | ||
| 13.06.11 | 1/2 | Juan-Pablo Amado | Guillermo Duran | 6-4, 6-4 | | match details | ||
| 06.06.11 | 2nd round | Guillermo Duran | Javier Sebastian Munoz Canessa | 4-6, 6-1, 7-5 | | match details | Argentina F6 | Clay |
| 06.06.11 | 1/4 | Guillermo Duran | Sergio Galdos | 3-6, 6-4, 6-4 | | match details | ||
| 06.06.11 | fin | Kevin Konfederak | Guillermo Duran | 6-4, 2-6, 7-5 | | match details | ||
| 06.06.11 | 1st round | Guillermo Duran | Manuel Agustin Belda | 6-1, 6-4 | | match details | ||
| 06.06.11 | 1/2 | Guillermo Duran | Joaquin-Jesus Monteferrario | 6-4, 6-4 | | match details | ||
| 23.05.11 | 1st round | Duilio Beretta | Guillermo Duran | 4-6, 6-2, 6-2 | | match details |  Paraguay F2 | Clay |
| 16.05.11 | 1/4 | Marco Trungelliti | Guillermo Duran | 6-0, 4-6, 7-62 | | match details | Paraguay F1 | Clay |
| 16.05.11 | 1st round | Guillermo Duran | Jose Benitez | 6-1, 6-2 | | match details | ||
| 16.05.11 | 2nd round | Guillermo Duran | Daniel-Alejandro Lopez | 3-6, 7-5, 6-1 | | match details | ||
| 02.05.11 | 1st round | Guillermo Duran | Fabricio Burdisso | 6-3, 6-2 | | match details | Argentina F4 | Clay |
| 02.05.11 | 1/4 | Juan-Pablo Amado | Guillermo Duran | 6-3, 7-63 | | match details | ||
| 02.05.11 | 2nd round | Guillermo Duran | Martin Rios-Benitez | 6-1, 6-3 | | match details | ||
| 25.04.11 | 1st round | Guillermo Duran | Gabriel Alejandro Hidalgo | 6-2, 6-3 | | match details | Argentina F3 | Clay |
| 25.04.11 | 2nd round | Guillermo Duran | Tomas Buchhass | 6-2, 6-3 | | match details | ||
| 25.04.11 | 1/4 | Stefano Travaglia | Guillermo Duran | 6-2, 6-4 | | match details | ||
| 18.04.11 | 1st round | Joaquin-Jesus Monteferrario | Guillermo Duran | 6-3, 6-3 | | match details | Argentina F2 | Clay |
| 11.04.11 | 1st round | Guillermo Duran | Armando Javier Boschetti | 6-1, 7-63 | | match details | Argentina F1 | Clay |
| 11.04.11 | 2nd round | Guillermo Duran | Hicham Khaddari | 6-3, 6-1 | | match details | ||
| 11.04.11 | 1/4 | Guillermo Duran | Gabriel Alejandro Hidalgo | 6-1, 6-2 | | match details | ||
| 11.04.11 | 1/2 | Agustin Velotti | Guillermo Duran | 6-4, 6-4 | | match details | ||
| 05.04.11 | 1st round | Diego Junqueira | Guillermo Duran | 7-60, 6-3 | | match details | Pereira Challenger | Clay |
| 04.04.11 | q 2 | Guillermo Duran | Cristian Chavez | 6-2, 6-3 | | match details | ||
| 04.04.11 | qual. | Guillermo Duran | Cristian Benedetti | 7-64, 6-3 | | match details | ||
| 28.03.11 | q 1 | Eduardo Struvay | Guillermo Duran | 4-6, 6-1, 6-1 | | match details | Barranquilla Challenger | Clay |
| 07.03.11 | q 1 | Patricio Heras | Guillermo Duran | 6-3, 6-4 | | match details | Santiago Challenger | Clay |
| 28.02.11 | q 1 | Louk Sorensen | Guillermo Duran | 6-4, 3-6, 6-1 | | match details | Salinas Challenger | Clay |
| 12.02.11 | q 1 | Juan-Pablo Villar | Guillermo Duran | 6-1, 6-3 | | match details | Buenos Aires | Clay |
| 06.12.10 | 1/4 | Guillermo Duran | Guido Andreozzi | 6-2, 6-1 | | match details | Chile F8 | Clay |
| 06.12.10 | 1st round | Guillermo Duran | Marcelo Paredes | 6-1, 6-1 | | match details | ||
| 06.12.10 | 2nd round | Guillermo Duran | Ignacio Coll-Riudavets | 3-6, 6-4, 6-1 | | match details | ||
| 06.12.10 | 1/2 | Borut Puc | Guillermo Duran | 6-3, 6-4 | | match details | ||
| 29.11.10 | 1/4 | Guillermo Duran | Marco Trungelliti | 7-64, 6-2 | | match details | Chile F7 | Clay |
| 29.11.10 | 1/2 | Guillermo Hormazabal | Guillermo Duran | 6-0, 6-4 | | match details | ||
| 29.11.10 | 1st round | Guillermo Duran | Andres Ceppo | 1-6, 6-1, 6-3 | | match details | ||
| 29.11.10 | 2nd round | Guillermo Duran | Enrique Lopez-Perez | 6-74, 6-4, 6-3 | | match details | ||
| 25.11.10 | 2nd round | Nikola Ciric | Guillermo Duran | 6-3, 6-4 | | match details | Buenos Aires | Clay |
| 23.11.10 | 1st round | Guillermo Duran | Maximo Gonzalez | 6-4, 4-6, 6-2 | | match details | ||
| 22.11.10 | qual. | Rafael Camilo | Guillermo Duran | 7-5, 6-4 | | match details | ||
| 22.11.10 | q 2 | Guillermo Duran | Facundo Lugones | 6-3, 6-4 | | match details | ||
| 25.10.10 | 2nd round | Guillermo Carry | Guillermo Duran | 6-4, 6-3 | | match details | Argentina F21 | Clay |
| 25.10.10 | 1st round | Guillermo Duran | Kevin Konfederak | 7-63, 2-6, 6-4 | | match details | ||
| 18.10.10 | q 1 | Guillermo Duran | Gerardo Rioseco | 6-1, 6-2 | | match details | Santiago Challenger | Clay |
| 18.10.10 | qual. | Goran Tosic | Guillermo Duran | 6-3, 4-6, 6-2 | | match details | ||
| 18.10.10 | q 2 | Guillermo Duran | Martin Alund | 7-68, 1-6, 6-1 | | match details | ||
| 04.10.10 | qual. | Marco Trungelliti | Guillermo Duran | 4-6, 6-3, 6-4 | | match details | Buenos Aires | Clay |
| 04.10.10 | q 1 | Guillermo Duran | Rodrigo Albano | 6-1, 6-0 | | match details | ||
| 04.10.10 | q 2 | Guillermo Duran | Maximiliano Estevez | 6-1, 6-2 | | match details | ||
| 28.09.10 | 1st round | Martin Vassallo Arguello | Guillermo Duran | 6-4, 6-2 | | match details | Montevideo Challenger | Clay |
| 27.09.10 | qual. | Guillermo Duran | Cristobal Saavedra-Corvalan | 3-6, 6-4, 6-1 | | match details | ||
| 27.09.10 | q 2 | Guillermo Duran | Gaston Giussani | 3-6, 6-2, 6-4 | | match details | ||
| 13.09.10 | 1st round | Jorge Aguilar | Guillermo Duran | 6-2, 4-6, 6-0 | | match details | Belo Horizonte | Clay |
| 07.09.10 | 1st round | Gero Kretschmer | Guillermo Duran | 6-2, 6-3 | | match details | Genova Challenger | Clay |
| 06.09.10 | q 2 | Guillermo Duran | Kevin Albonetti | 6-2, 6-2 | | match details | ||
| 06.09.10 | qual. | Guillermo Duran | Jacopo Marchegiani | 0-6, 6-2, 6-3 | | match details | ||
| 30.08.10 | qual. | Johannes Ager | Guillermo Duran | 6-2, 6-3 | | match details | Como Challenger | Clay |
| 30.08.10 | q 2 | Guillermo Duran | Patricio Heras | 6-4, 6-4 | | match details | ||
| 23.08.10 | q 2 | Marc Sieber | Guillermo Duran | 6-4, 6-2 | | match details | Manerbio Challenger | Clay |
| 23.08.10 | q 1 | Guillermo Duran | Mauro Bosio | 7-64, 6-76, 6-4 | | match details | ||
| 09.08.10 | fin | Pablo Galdon | Guillermo Duran | 6-0, 6-4 | | match details | Argentina F16 | Clay |
| 09.08.10 | 1/2 | Guillermo Duran | Juan-Pablo Amado | 6-4, 7-5 | | match details | ||
| 09.08.10 | 1st round | Guillermo Duran | Gaston Giussani | 7-5, 6-1 | | match details | ||
| 09.08.10 | 2nd round | Guillermo Duran | Rodrigo Gomez Saigos | 6-3, 6-4 | | match details | ||
| 09.08.10 | 1/4 | Guillermo Duran | Diego Sebastian Schwartzman | 7-63, 6-1 | | match details | ||
| 02.08.10 | 1st round | Guillermo Duran | Stefano Travaglia | 6-1, 6-2 | | match details | Argentina F15 | Clay |
| 02.08.10 | 2nd round | Guillermo Duran | Maximiliano Estevez | 7-5, 4-6, 7-5 | | match details | ||
| 02.08.10 | 1/2 | Facundo Arguello | Guillermo Duran | 6-1, 7-66 | | match details | ||
| 02.08.10 | 1/4 | Guillermo Duran | Cristian Benedetti | Cristian Benedetti - walk over | | match details | ||
| 19.07.10 | 1st round | Diego Sebastian Schwartzman | Guillermo Duran | 6-1, 6-3 | | match details | Argentina F14 | Clay |
| 13.07.10 | 1st round | Ricardo Hocevar | Guillermo Duran | 6-4, 6-4 | | match details | Bogota Challenger | Clay |
| 12.07.10 | qual. | Guillermo Duran | Adam Hubble | 6-4, 6-3 | | match details | ||
| 12.07.10 | q 2 | Guillermo Duran | Nicolas Barrientos | 6-3, 6-3 | | match details | ||
| 28.06.10 | 1st round | Guillermo Duran | Martin Cuevas | 3-6, 6-1, 6-2 | | match details | Argentina F11 | Clay |
| 28.06.10 | 2nd round | Guillermo Duran | Armando Javier Boschetti | 6-2, 6-1 | | match details | ||
| 28.06.10 | 1/4 | Alejandro Fabbri | Guillermo Duran | 7-66, 6-4 | | match details | ||
| 21.06.10 | 2nd round | Andres Molteni | Guillermo Duran | 6-4, 7-63 | | match details | Argentina F10 | Clay |
| 21.06.10 | 1st round | Guillermo Duran | Santiago Celia | 6-1, 6-1 | | match details | ||
| 14.06.10 | 2nd round | Guillermo Rivera-Aranguiz | Guillermo Duran | 6-2, 6-4 | | match details | Argentina F9 | Clay |
| 14.06.10 | 1st round | Guillermo Duran | Diego Sebastian Schwartzman | 6-1, 7-5 | | match details | ||
| 07.06.10 | 1/2 | Guillermo Duran | Juan-Manuel Valverde | 4-6, 6-3, 6-3 | | match details | Argentina F8 | Clay |
| 07.06.10 | 1st round | Guillermo Duran | Nicolas Jara-Lozano | 4-6, 6-2, 6-2 | | match details | ||
| 07.06.10 | 2nd round | Guillermo Duran | Rodrigo Perez | 6-4, 6-3 | | match details | ||
| 07.06.10 | 1/4 | Guillermo Duran | Agustin Picco | 7-64, 6-76, 7-5 | | match details | ||
| 07.06.10 | fin | Marco Trungelliti | Guillermo Duran | 6-3, 4-6, 6-2 | | match details | ||
| 31.05.10 | 1st round | Guillermo Duran | Matias Castro | 4-6, 6-3, 6-2 | | match details | Argentina F7 | Clay |
| 31.05.10 | 2nd round | Guillermo Duran | Juan-Manuel Romanazzi | 6-4, 6-3 | | match details | ||
| 31.05.10 | 1/2 | Andres Molteni | Guillermo Duran | 7-5, 1-6, 6-1 | | match details | ||
| 31.05.10 | 1/4 | Guillermo Duran | Rodrigo Gomez Saigos | 6-1, 7-64 | | match details | ||
| 03.05.10 | 1/2 | Patricio Heras | Guillermo Duran | 7-62, 6-4 | | match details | Argentina F5 | Clay |
| 03.05.10 | 1st round | Guillermo Duran | Agustin Picco | 6-3, 6-1 | | match details | ||
| 03.05.10 | 2nd round | Guillermo Duran | Gabriel Alejandro Hidalgo | 6-1, 7-5 | | match details | ||
| 03.05.10 | 1/4 | Guillermo Duran | Renzo Olivo | 6-4, 6-4 | | match details | ||
| 26.04.10 | fin | Lionel Noviski | Guillermo Duran | 6-4, 6-4 | | match details | Argentina F4 | Clay |
| 26.04.10 | 1/2 | Guillermo Duran | Guillermo Bujniewicz | 6-1, 6-0 | | match details | ||
| 26.04.10 | 1st round | Guillermo Duran | Gaston-Arturo Grimolizzi | 6-4, 6-2 | | match details | ||
| 26.04.10 | 2nd round | Guillermo Duran | Damian Guichonet | 6-4, 6-4 | | match details | ||
| 26.04.10 | 1/4 | Guillermo Duran | Nicolas Jara-Lozano | 6-3, 6-2 | | match details | ||
| 19.04.10 | 1st round | Miguel Cicenia | Guillermo Duran | 6-4, 7-66 | | match details | Brazil F3 | Clay |
| 12.04.10 | 1st round | Jonathan Eysseric | Guillermo Duran | 6-3, 6-3 | | match details | Brazil F2 | Clay |
| 08.02.10 | 1st round | Ricardo Urzua-Rivera | Guillermo Duran | 6-3, 6-3 | | match details | Argentina F3 | Clay |
| 01.02.10 | 1st round | Andres Molteni | Guillermo Duran | 6-4, 2-6, 6-3 | | match details | Argentina F2 | Clay |
| 23.11.09 | 2nd round | Alejandro Fabbri | Guillermo Duran | 6-2, Guillermo Duran - retired | | match details | Argentina F25 | Clay |
| 23.11.09 | 1st round | Guillermo Duran | Facundo Arguello | 6-1, 6-2 | | match details | ||
| 09.11.09 | 2nd round | Juan-Manuel Valverde | Guillermo Duran | 6-2, 1-6, 6-1 | | match details | Argentina F23 | Clay |
| 09.11.09 | 1st round | Guillermo Duran | Federico Clara Figueroa | 6-4, 6-2 | | match details | ||
| 02.11.09 | 1st round | Guillermo Duran | Nicolas Alejandro De Gregorio | 6-4, 6-3 | | match details | Argentina F22 | Clay |
| 02.11.09 | 2nd round | Marcos Conocente | Guillermo Duran | 7-64, 2-6, 7-5 | | match details | ||
| 26.10.09 | 1st round | Alejandro Kon | Guillermo Duran | 4-6, 7-61, 7-5 | | match details | Argentina F21 | Clay |
| 19.10.09 | qual. | Adrian Garcia | Guillermo Duran | 6-0, 6-3 | | match details | Santiago Challenger | Clay |
| 19.10.09 | q 1 | Guillermo Duran | Marcelo Plaza | 6-3, 6-1 | | match details | ||
| 05.10.09 | 1st round | Guillermo Duran | Juan-Manuel Ferrer | 6-0, 6-1 | | match details | Argentina F18 | Clay |
| 05.10.09 | 2nd round | Guillermo Duran | Federico Zeballos | 6-3, 6-4 | | match details | ||
| 05.10.09 | 1/4 | Diego Cristin | Guillermo Duran | 6-4, 6-2 | | match details | ||
| 28.09.09 | 2nd round | Marco Trungelliti | Guillermo Duran | 7-63, 3-6, 6-4 | | match details | Argentina F17 | Clay |
| 28.09.09 | 1st round | Guillermo Duran | Armando Javier Boschetti | 7-66, 6-3 | | match details | ||
| 21.09.09 | 1/2 | Jonathan Gonzalia | Guillermo Duran | 6-73, 6-3, 6-4 | | match details | Argentina F16 | Clay |
| 21.09.09 | 2nd round | Guillermo Duran | Cristian Benedetti | 6-4, 6-2 | | match details | ||
| 21.09.09 | 1/4 | Guillermo Duran | Facundo Arguello | 6-2, 0-6, 6-2 | | match details | ||
| 21.09.09 | 1st round | Guillermo Duran | Diego Cristin | 6-3, 6-3 | | match details | ||
| 14.09.09 | 1st round | Guillermo Duran | Andres Molteni | 6-4, 6-4 | | match details | Argentina F15 | Clay |
| 14.09.09 | 2nd round | Marcos Conocente | Guillermo Duran | 7-64, 6-4 | | match details | ||
| 07.09.09 | 2nd round | Guillermo Duran | Gonzalo Tur | 6-4, 7-5 | | match details | Argentina F14 | Clay |
| 07.09.09 | 1/4 | Guillermo Duran | Leandro Migani | 3-6, 7-5, 6-4 | | match details | ||
| 07.09.09 | 1/2 | Alejandro Fabbri | Guillermo Duran | 6-1, 6-74, 6-4 | | match details | ||
| 07.09.09 | 1st round | Guillermo Duran | Facundo Lugones | 3-6, 6-2, 6-0 | | match details | ||
| 24.08.09 | 2nd round | Guillermo Duran | Kevin Konfederak | 6-4, 6-3 | | match details | Colombia F5 | Clay |
| 24.08.09 | 1/2 | Juan-Sebastian Cabal | Guillermo Duran | 6-3, 6-2 | | match details | ||
| 24.08.09 | 1/4 | Guillermo Duran | Michael Quintero | 6-2, 6-0 | | match details | ||
| 24.08.09 | 1st round | Guillermo Duran | Juan Sebastian Gomez | 7-5, 6-1 | | match details | ||
| 17.08.09 | 1st round | Borut Puc | Guillermo Duran | 6-1, 6-4 | | match details | Colombia F4 | Clay |
| 10.08.09 | 1st round | Juan-Sebastian Cabal | Guillermo Duran | 6-0, 6-4 | | match details | Colombia F3 | Clay |
| 22.06.09 | 1st round | Guillermo Duran | Federico Cavallero | 6-2, 4-6, 6-4 | | match details | Argentina F10 | Clay |
| 22.06.09 | 1/4 | Rodrigo Perez | Guillermo Duran | 6-3, 3-1, Guillermo Duran - retired | | match details | ||
| 22.06.09 | 2nd round | Guillermo Duran | Juan-Pablo Villar | 6-79, 6-4, 6-3 | | match details | ||
| 15.06.09 | 2nd round | Martin Cuevas | Guillermo Duran | 3-6, 7-63, 6-1 | | match details | Argentina F9 | Clay |
| 15.06.09 | 1st round | Guillermo Duran | Juan-Manuel Valverde | 6-3, 3-6, 6-2 | | match details | ||
| 08.06.09 | 1st round | Guillermo Duran | Bruno Hamann | 1-6, 6-2, 6-1 | | match details | Argentina F8 | Clay |
| 08.06.09 | 2nd round | Guillermo Rivera-Aranguiz | Guillermo Duran | 6-4, 6-3 | | match details | ||
| 18.05.09 | 1st round | Erick Reyes | Guillermo Duran | 1-6, 7-67, 6-4 | | match details | Argentina F6 | Clay |
| 11.05.09 | 1st round | Nicolas Jara-Lozano | Guillermo Duran | 7-62, 6-3 | | match details | Argentina F5 | Clay |
| 04.05.09 | 1st round | Guillermo Duran | Kevin Konfederak | 6-4, 6-3 | | match details | Argentina F4 | Clay |
| 04.05.09 | 2nd round | Andres Molteni | Guillermo Duran | 6-3, 6-3 | | match details | ||
| 27.04.09 | 1st round | Guillermo Bujniewicz | Guillermo Duran | 6-2, 6-3 | | match details | Argentina F3 | Clay |
| 13.04.09 | 2nd round | Juan-Pablo Amado | Guillermo Duran | 6-1, 6-3 | | match details | Argentina F1 | Clay |
| 13.04.09 | 1st round | Guillermo Duran | Martin Rios-Benitez | 6-1, 7-5 | | match details | ||
| 08.12.08 | 1st round | Nicolas Jara-Lozano | Guillermo Duran | 6-3, 6-3 | | match details | Argentina F18 | Clay |
| 01.12.08 | 1st round | Diego Alvarez | Guillermo Duran | 6-4, 6-1 | | match details | Argentina F17 | Clay |
| 24.11.08 | 2nd round | Daniel-Alejandro Lopez | Guillermo Duran | 3-6, 6-4, 6-2 | | match details | Uruguay F1 | Clay |
| 24.11.08 | 1st round | Guillermo Duran | Leonel Alberti | 6-2, 4-6, 7-62 | | match details | ||
| 10.11.08 | 1st round | Guillermo Duran | Ivan Endara | 6-2, 6-4 | | match details | Peru F5 | Clay |
| 10.11.08 | 2nd round | Cristobal Saavedra-Corvalan | Guillermo Duran | 6-3, 6-1 | | match details | ||
| 03.11.08 | 1st round | Facundo Bagnis | Guillermo Duran | 7-5, 6-74, 6-2 | | match details | Peru F4 | Clay |
| 13.10.08 | 1st round | Sebastian Uriarte | Guillermo Duran | 7-5, 6-4 | | match details | Argentina F13 | Clay |
| 06.10.08 | 1st round | Mauro Ferrer | Guillermo Duran | 6-3, 6-2 | | match details | Argentina F12 | Clay |
| 29.09.08 | 1st round | Gaston Giussani | Guillermo Duran | 4-6, 7-5, 7-66 | | match details | Argentina F11 | Clay |
| 08.09.08 | 1st round | Federico Delbonis | Guillermo Duran | 6-0, 6-1 | | match details | Argentina F10 | Clay |
| 01.09.08 | 1st round | Agustin Tarantino | Guillermo Duran | 6-1, 2-6, 6-4 | | match details | Argentina F9 | Clay |
| 14.07.08 | 1st round | Mauricio Doria-Medina | Guillermo Duran | 6-3, 6-3 | | match details | Peru F3 | Clay |
| 07.07.08 | 1st round | Guillermo Duran | Guido Pella | 6-4, 7-5 | | match details | Peru F2 | Clay |
| 07.07.08 | 2nd round | Guillermo Duran | Mauricio Doria-Medina | 3-6, 6-2, 6-2 | | match details | ||
| 07.07.08 | 1/2 | Brett Ross | Guillermo Duran | 6-3, 6-0 | | match details | ||
| 07.07.08 | 1/4 | Guillermo Duran | Ezequiel Krivulin | 6-4, 6-4 | | match details | ||
| 30.06.08 | 1st round | Guillermo Duran | Ryusei Makiguchi | 6-4, 6-1 | | match details | Peru F1 | Clay |
| 30.06.08 | 2nd round | Cristian Benedetti | Guillermo Duran | 7-5, 6-2 | | match details | ||
| 23.06.08 | 1st round | Juan-Manuel Valverde | Guillermo Duran | 6-3, 3-6, 6-3 | | match details | Brazil F10 | Clay |
| 19.05.08 | 1st round | Facundo Bagnis | Guillermo Duran | 5-7, 6-3, 6-4 | | match details | Argentina F3 | Clay |
| 05.05.08 | 1st round | Gaston-Arturo Grimolizzi | Guillermo Duran | 6-1, 6-4 | | match details | Argentina F1 | Clay |
| 28.04.08 | 2nd round | Ivan Endara | Guillermo Duran | 6-3, 6-4 | | match details | Colombia F3 | Clay |
| 28.04.08 | 1st round | Guillermo Duran | Andres Garriga Rivero | 6-3, 7-5 | | match details | ||
| 24.09.07 | 1st round | Guillermo Duran | Alejandro Mendoza | 6-4, 6-4 | | match details |  Bolivia F3 | Clay |
| 24.09.07 | 2nd round | Guillermo Bujniewicz | Guillermo Duran | 6-2, 6-1 | | match details | ||
| 17.09.07 | 1st round | Guillermo Duran | Leonel Alberti | 5-7, 6-1, 6-1 | | match details | Bolivia F2 | Clay |
| 17.09.07 | 2nd round | Federico Cavallero | Guillermo Duran | 6-3, 6-2 | | match details | ||
| 10.09.07 | 1st round | Jhonson Garcia | Guillermo Duran | 7-5, 3-6, 6-1 | | match details | Bolivia F1 | Clay |
| 27.08.07 | 1st round | Nicolas Jara-Lozano | Guillermo Duran | 6-4, 6-2 | | match details | Argentina F14 | Clay |
| 06.08.07 | 2nd round | Marcel-Ioan Miron | Guillermo Duran | 6-2, 6-4 | | match details |  Romania F15 | Clay |
| 06.08.07 | 1st round | Guillermo Duran | Radu-Traian Ionescu | 6-1, 7-64 | | match details | ||
| 30.07.07 | 2nd round | Bogdan-Victor Leonte | Guillermo Duran | 6-1, 7-5 | | match details | Romania F14 | Clay |
| 30.07.07 | 1st round | Guillermo Duran | Robin Fahgen | 6-2, 6-4 | | match details | ||
| 23.07.07 | 1st round | Laurentiu-Antoniu Erlic | Guillermo Duran | 1-6, 7-5, 6-1 | | match details | Romania F13 | Clay |
| 18.06.07 | 1st round | Facundo Bagnis | Guillermo Duran | 6-3, 6-2 | | match details | Argentina F9 | Clay |
| 11.06.07 | 1st round | Leandro Migani | Guillermo Duran | 6-1, 6-0 | | match details | Argentina F8 | Clay |
| 07.05.07 | 1st round | Diego Cristin | Guillermo Duran | 6-3, 6-2 | | match details | Argentina F3 | Clay |
| 23.04.07 | 1st round | Adam Fass | Guillermo Duran | 6-4, 6-2 | | match details | Argentina F1 | Clay |
| 20.11.06 | 1st round | Gaston-Arturo Grimolizzi | Guillermo Duran | 6-2, 1-6, 6-3 | | match details | Chile F5 | Clay |
| 13.11.06 | 1st round | Antonio Veic | Guillermo Duran | 6-1, 6-0 | | match details | Chile F4 | Clay |
