Name: Anna Klasen
Country: Germany
Birthdate: 15.11.93, 30 years
WTA ranking: 894
TOP ranking's position: 426 (06.04.15, 7000 points)
Points: 25
Prize money: 73708 $
Matches total: 469
Win: 253
%: 53.94 %
Country: Germany
Birthdate: 15.11.93, 30 years
WTA ranking: 894
TOP ranking's position: 426 (06.04.15, 7000 points)
Points: 25
Prize money: 73708 $
Matches total: 469
Win: 253
%: 53.94 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 2/2 | 0/1 | 2/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2023 | 9/14 | 0/0 | 7/12 | 2/2 | 0/0 | 0/0 | 0/0 |
| 2022 | 16/15 | 0/2 | 12/8 | 4/4 | 0/1 | 0/0 | 0/0 |
| 2021 | 15/10 | 1/1 | 11/7 | 3/2 | 0/0 | 0/0 | 0/0 |
| 2020 | 20/8 | 0/0 | 18/6 | 2/1 | 0/1 | 0/0 | 0/0 |
| 2019 | 8/15 | 0/0 | 7/12 | 0/0 | 1/3 | 0/0 | 0/0 |
| 2018 | 27/20 | 4/3 | 8/9 | 1/1 | 14/7 | 0/0 | 0/0 |
| 2017 | 6/6 | 0/1 | 1/3 | 0/0 | 5/2 | 0/0 | 0/0 |
| 2016 | 17/23 | 0/0 | 14/17 | 0/3 | 3/3 | 0/0 | 0/0 |
| 2015 | 29/28 | 8/7 | 9/13 | 8/5 | 4/3 | 0/0 | 0/0 |
| 2014 | 42/22 | 19/7 | 20/13 | 0/1 | 3/1 | 0/0 | 0/0 |
| 2013 | 29/26 | 0/0 | 23/22 | 5/2 | 1/2 | 0/0 | 0/0 |
| 2012 | 17/17 | 0/0 | 17/14 | 0/2 | 0/1 | 0/0 | 0/0 |
| 2011 | 14/8 | 0/0 | 14/8 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2010 | 2/2 | 0/0 | 2/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 253/216 | 32/22 | 165/147 | 25/23 | 31/24 | 0/0 | 0/0 |
| perc. % | 53.94 % | 59.26 % | 52.88 % | 52.08 % | 56.36 % | 0 % | 0 % |
Anna Klasen / scheduled / last
| no matches found |
Anna Klasen form / surface: Clay
Anna Klasen / surface: Clay
| 19.03.24 | qual. | Ana Giraldi Requena | Anna Klasen | 7-65, 1-6, 10-7 |  | match details |  W15 Sabadell | Clay |
| 18.03.24 | q 2 | Anna Klasen | Aaddi Gupta | 6-4, 6-4 |  | match details | ||
| 17.03.24 | q 1 | Anna Klasen | Berta Ladaga Auge | 6-0, 6-1 | | match details | ||
| 25.09.23 | q 1 | Laura Hietaranta | Anna Klasen | 6-2, 6-3 | | match details |  W25 Santa | Clay |
| 04.09.23 | q 1 | Chiara Scholl | Anna Klasen | 6-2, 6-2 | | match details |  W60 Vienna | Clay |
| 30.08.23 | 1st round | Merel Hoedt | Anna Klasen | 6-2, 6-1 | | match details |  W40 Oldenzaal | Clay |
| 29.08.23 | qual. | Anna Klasen | Marine Partaud | 4-6, 6-4, 6-4 | | match details | ||
| 28.08.23 | q 1 | Anna Klasen | Emma Van Poppel | 6-2, 6-0 | | match details | ||
| 22.08.23 | 1st round | Ella Seidel | Anna Klasen | 6-2, 6-3 | | match details |  W25 Braunschweig | Clay |
| 19.06.23 | q 1 | Lia Karatancheva | Anna Klasen | 7-5, 6-1 | | match details |  W40 Ystad | Clay |
| 12.06.23 | qual. | Nika Radisic | Anna Klasen | 6-3, 6-2 | | match details |  W60 Ricany | Clay |
| 11.06.23 | q 1 | Anna Klasen | Laura Svatikova | 2-6, 6-3, 6-4 | | match details | ||
| 29.05.23 | q 1 | Yuliana Lizarazo | Anna Klasen | 6-3, 6-2 | | match details | W60 Brescia | Clay |
| 10.05.23 | 1st round | Bella Bergkvist Larsson | Anna Klasen | 6-3, 6-3 | | match details | W25 Bastad | Clay |
| 09.05.23 | qual. | Anna Klasen | Tilde Stromquist | 6-1, 6-4 | | match details | ||
| 08.05.23 | q 1 | Anna Klasen | Stina Larsson | 0-6, 6-2, 10-7 | | match details | ||
| 02.05.23 | 1st round | Mona Barthel | Anna Klasen | 6-4, 3-6, 6-3 | | match details | W100 Wiesbaden | Clay |
| 01.05.23 | qual. | Anna Klasen | Andreea Prisacariu | 6-72, 6-3, 7-5 | | match details | ||
| 30.04.23 | q 1 | Anna Klasen | Emily Appleton | 6-4, 6-3 | | match details | ||
| 16.04.23 | q 1 | Chiara Girelli | Anna Klasen | 6-71, 7-5, 6-1 | | match details |  W60 Bellinzona | Clay |
| 11.04.23 | 1st round | Marta Soriano Santiago | Anna Klasen | 6-1, 4-6, 6-4 | | match details | W15 Telde | Clay |
| 05.04.23 | 1st round | Jiho Shin | Anna Klasen | 6-1, 2-6, 6-2 | | match details | W15 Telde | Clay |
| 29.09.22 | 2nd round | Sara Bejlek | Anna Klasen | 6-3, 6-2 | | match details | W25 Santa | Clay |
| 28.09.22 | 1st round | Anna Klasen | Martina Di Giuseppe | 4-6, 7-62, 6-4 | | match details | ||
| 27.09.22 | qual. | Anna Klasen | Virginia Ferrara | 6-70, 7-65, 10-7 | | match details | ||
| 27.09.22 | q 1 | Anna Klasen | Elena Giovanna Giessler | 6-3, 6-1 | | match details | ||
| 08.09.22 | 2nd round | Oceane Dodin | Anna Klasen | 6-1, 6-1 | | match details | W60 Montreux | Clay |
| 07.09.22 | 1st round | Anna Klasen | Bojana Klincov | 6-3, 7-63 | | match details | ||
| 06.09.22 | qual. | Anna Klasen | Mana Ayukawa | 6-4, 7-66 | | match details | ||
| 05.09.22 | q 1 | Anna Klasen | Kamila Kashaeva | 6-1, 6-2 | | match details | ||
| 31.08.22 | 1st round | Selena Janicijevic | Anna Klasen | 6-4, 6-1 | | match details | W60 Collonge | Clay |
| 30.08.22 | qual. | Anna Klasen | Mana Ayukawa | 7-5, 2-6, 14-12 | | match details | ||
| 29.08.22 | q 1 | Anna Klasen | Lilly Elida Haseth | Lilly Elida Haseth - walk over | | match details | ||
| 24.08.22 | 1st round | Joelle Steur | Anna Klasen | 6-4, 6-4 | | match details | W25 Braunschweig | Clay |
| 19.08.22 | 1/4 | Joelle Steur | Anna Klasen | 7-65, 7-5 | | match details | W15 Erwitte | Clay |
| 18.08.22 | 2nd round | Anna Klasen | Laura Boehner | 6-3, 6-3 | | match details | ||
| 17.08.22 | 1st round | Anna Klasen | Maria Patrascu | 4-6, 6-3, 6-3 | | match details | ||
| 12.08.22 | 1/4 | Nina Potocnik | Anna Klasen | 6-3, 6-4 | | match details | W25+H Leipzig | Clay |
| 11.08.22 | 2nd round | Anna Klasen | Stefanie Voegele | 6-2, 2-6, 7-62 | | match details | ||
| 10.08.22 | 1st round | Anna Klasen | Vlada Ekshibarova | 6-1, 6-4 | | match details | ||
| 01.05.22 | q 1 | Lara Smejkal | Anna Klasen | 5-7, 6-3, 10-4 | | match details |  W60 Koper | Clay |
| 24.04.22 | q 1 | Lina Gjorcheska | Anna Klasen | 6-2, 7-62 | | match details |  W60 Zagreb | Clay |
| 23.09.21 | 2nd round | Federica Di Sarra | Anna Klasen | 6-4, 7-5 | | match details | W80 Wiesbaden | Clay |
| 22.09.21 | 1st round | Anna Klasen | Yana Morderger | 6-74, 6-1, 6-3 | | match details | ||
| 15.09.21 | 2nd round | Alina Granwehr | Anna Klasen | 6-2, 6-4 | | match details |  W15 Dijon | Clay |
| 14.09.21 | 1st round | Anna Klasen | Karen Marthiens | 6-1, 6-1 | | match details | ||
| 29.08.21 | fin | Nastasja Mariana Schunk | Anna Klasen | 6-3, 6-1 | | match details | W25 Braunschweig | Clay |
| 28.08.21 | 1/2 | Anna Klasen | Dalila Jakupovic | 3-6, 6-0, 6-2 | | match details | ||
| 28.08.21 | 1/4 | Anna Klasen | Tayisiya Morderger | 7-62, 6-2 | | match details | ||
| 26.08.21 | 2nd round | Anna Klasen | Sofya Lansere | 3-6, 0-2, Sofya Lansere - retired | | match details | ||
| 25.08.21 | 1st round | Anna Klasen | Tamira Paszek | 6-2, 6-3 | | match details | ||
| 10.08.21 | 1st round | Katharina Hobgarski | Anna Klasen | 7-65, 6-4 | | match details |  W25 Koksijde | Clay |
| 09.08.21 | qual. | Anna Klasen | Ekaterina Kazionova | 6-4, 3-6, 10-5 | | match details | ||
| 08.08.21 | q 1 | Anna Klasen | Lexie Stevens | 6-3, 6-3 | | match details | ||
| 29.07.21 | 2nd round | Federica Di Sarra | Anna Klasen | 6-4, 6-4 | | match details | W60 Versmold | Clay |
| 27.07.21 | 1st round | Anna Klasen | Daniela Seguel | 6-3, 6-75, 6-4 | | match details | ||
| 26.07.21 | qual. | Anna Klasen | Yana Morderger | 6-70, 6-2, 10-6 | | match details | ||
| 25.07.21 | q 1 | Anna Klasen | Margot Yerolymos | 6-3, 1-0, Margot Yerolymos - retired | | match details | ||
| 18.07.21 | q 1 | Amanda Carreras | Anna Klasen | 6-2, 6-1 | | match details | W60 Olomouc | Clay |
| 05.07.21 | q 1 | Margaux Rouvroy | Anna Klasen | 6-4, 6-3 | | match details | W100 Contrexeville | Clay |
| 28.08.20 | 1st round | Romy Koelzer | Anna Klasen | 7-66, 7-67 | | match details |  All Lower | Clay |
| 27.08.20 | 1st round | Anna Klasen | Elena-Teodora Cadar | 6-2, 6-1 | | match details | ||
| 26.08.20 | 1st round | Anna Klasen | Yana Morderger | 6-2, 6-2 | | match details | ||
| 25.08.20 | 1st round | Anna Klasen | Lisa Matviyenko | 6-3, 6-0 | | match details | ||
| 24.08.20 | 1st round | Anna Klasen | Ganna Poznikhirenko | 6-3, 6-1 | | match details | ||
| 20.08.20 | 1st round | Anna Klasen | Sophia Intert | 6-2, 6-1 | | match details | ||
| 19.08.20 | 1st round | Chantal Sauvant | Anna Klasen | 7-5, 7-5 | | match details | ||
| 18.08.20 | 1st round | Ekaterine Gorgodze | Anna Klasen | 6-4, 6-4 | | match details | ||
| 17.08.20 | 1st round | Quirine Lemoine | Anna Klasen | 6-0, 7-63 | | match details | ||
| 07.08.20 | 1st round | Anna Klasen | Miriam Bianca Bulgaru | 6-4, 6-1 | | match details | ||
| 06.08.20 | 1st round | Anna Klasen | Arlinda Rushiti | 6-3, 6-2 | | match details | ||
| 05.08.20 | 1st round | Anna Klasen | Lisa Ponomar | 6-3, 6-1 | | match details | ||
| 03.08.20 | 1st round | Anna Klasen | Gabriela Duca | 6-3, 6-1 | | match details | ||
| 30.07.20 | 1st round | Anna Klasen | Luisa Meyer Auf Der Heide | 6-3, 6-0 | | match details | ||
| 29.07.20 | 1st round | Anna Klasen | Katharina Hering | 1-6, 6-3, 7-63 | | match details | ||
| 28.07.20 | 1st round | Miriam Bianca Bulgaru | Anna Klasen | 6-4, 0-6, 6-3 | | match details | ||
| 02.07.20 | 1st round | Anna Klasen | Nikol Rivkin | 6-3, 6-3 | | match details | ||
| 01.07.20 | 1st round | Anna Klasen | Jasmin Jebawy | 6-0, 6-2 | | match details | ||
| 30.06.20 | 1st round | Anna Klasen | Angelina Wirges | 6-4, 4-6, 6-3 | | match details | ||
| 12.03.20 | 2nd round | Anna Klasen | Federica Arcidiacono | 7-65, 1-6, 7-5 | | match details |  W15 Heraklion | Clay |
| 11.03.20 | 1st round | Anna Klasen | Tamara Curovic | 7-5, 6-0 | | match details | ||
| 10.03.20 | q 2 | Anna Klasen | Ema Bolebruchova | 6-2, 6-3 | | match details | ||
| 10.03.20 | qual. | Anna Klasen | Sem Wensveen | 2-6, 6-1, 10-5 | | match details | ||
| 01.03.20 | q 1 | Laura Svatikova | Anna Klasen | 7-5, 6-3 | | match details | W15 Heraklion | Clay |
| 27.11.19 | 1st round | Svenja Ochsner | Anna Klasen | 6-2, 7-5 | | match details | W15 Heraklion | Clay |
| 30.09.19 | q 1 | Angelica Moratelli | Anna Klasen | 6-1, 6-0 | | match details | W25 Santa | Clay |
| 24.09.19 | qual. | Ana Lantigua De La Nuez | Anna Klasen | 7-5, 6-4 | | match details | W25 Santa | Clay |
| 23.09.19 | q 1 | Anna Klasen | Andreina Pino | 6-1, 6-0 | | match details | ||
| 23.08.19 | 1/4 | Maryna Zanevska | Anna Klasen | 3-6, 6-3, 6-2 | | match details | W25 Braunschweig | Clay |
| 22.08.19 | 2nd round | Anna Klasen | Jessica Pieri | 1-6, 6-3, 6-0 | | match details | ||
| 20.08.19 | 1st round | Anna Klasen | Polina Leykina | 6-4, 6-1 | | match details | ||
| 14.08.19 | 1st round | Valentyna Ivakhnenko | Anna Klasen | 7-5, 6-4 | | match details | W25+H Leipzig | Clay |
| 05.08.19 | q 1 | Michaela Bayerlova | Anna Klasen | 6-3, 6-2 | | match details | W60 Hechingen | Clay |
| 24.07.19 | 1st round | Oana Georgeta Simion | Anna Klasen | 6-2, 6-0 | | match details | W25 Horb | Clay |
| 23.07.19 | qual. | Anna Klasen | Gabriela Horackova | 3-6, 6-4, 16-14 | | match details | ||
| 22.07.19 | q 1 | Anna Klasen | Jantje Tilbuerger | 6-3, 5-7, 10-6 | | match details | ||
| 08.07.19 | q 1 | Amina Anshba | Anna Klasen | 7-65, 6-4 | | match details | W60 Versmold | Clay |
| 01.07.19 | q 1 | Despina Papamichail | Anna Klasen | 6-0, 6-1 | | match details | W25 Den | Clay |
| 19.06.19 | 1st round | Julia Grabher | Anna Klasen | 6-3, 6-2 | | match details | W25 Klosters | Clay |
| 18.06.19 | qual. | Anna Klasen | Charlotte Roemer | 6-3, 6-4 | | match details | ||
| 17.06.19 | q 1 | Anna Klasen | Lea Gietz | 6-75, 6-1, 12-10 | | match details | ||
| 11.06.19 | 1st round | Alina Silich | Anna Klasen | 6-4, 6-3 | | match details | W15 Kaltenkirchen | Clay |
| 29.04.19 | q 1 | Adrienn Nagy | Anna Klasen | 7-65, 6-2 | | match details | W25 Santa | Clay |
| 19.08.18 | q 1 | Priscilla Heise | Anna Klasen | 3-6, 6-2, 6-2 | | match details | Braunschweig | Clay |
| 14.08.18 | 1st round | Julia Grabher | Anna Klasen | 7-62, 6-4 | | match details | Leipzig | Clay |
| 05.08.18 | q 1 | Claudia Hoste Ferrer | Anna Klasen | 2-6, 6-1, 6-3 | | match details | Hechingen | Clay |
| 30.07.18 | q 1 | Gabriela Pantuckova | Anna Klasen | 6-3, 6-2 | | match details | Bad Saulgau | Clay |
| 23.07.18 | q 2 | Anastasia Detiuc | Anna Klasen | 6-2, 6-1 | | match details | Prague | Clay |
| 22.07.18 | q 1 | Anna Klasen | Laura Svatikova | 6-2, 6-0 | | match details | ||
| 10.07.18 | qual. | Jule Niemeier | Anna Klasen | 7-64, 6-1 | | match details | Versmold | Clay |
| 09.07.18 | q 2 | Anna Klasen | Amina Anshba | 7-5, 7-67 | | match details | ||
| 08.07.18 | q 1 | Anna Klasen | Alina Wessel | 6-2, 6-2 | | match details | ||
| 01.07.18 | q 1 | Natalie Proese | Anna Klasen | 6-2, 6-4 | | match details | Aschaffenburg | Clay |
| 22.06.18 | 2nd round | Anna Klasen | Dominique Karregat | 6-2, 4-6, 7-5 | | match details | Kaltenkirchen | Clay |
| 22.06.18 | 1/4 | Chantal Sauvant | Anna Klasen | 6-1, 6-3 | | match details | ||
| 19.06.18 | 1st round | Anna Klasen | Sviatlana Pirazhenka | 6-2, 6-3 | | match details | ||
| 24.04.18 | 1st round | Rio Kitagawa | Anna Klasen | 7-67, 5-7, 6-4 | | match details | Tucepi | Clay |
| 23.04.18 | qual. | Anna Klasen | Katja Milas | 6-4, 6-4 | | match details | ||
| 22.04.18 | q 2 | Anna Klasen | Daniela Hlacikova | 7-63, 6-3 | | match details | ||
| 21.04.18 | q 1 | Anna Klasen | Neli Sunjic | 6-1, 3-6, 6-3 | | match details | ||
| 17.04.17 | q 1 | Anna Klasen | Dagmar Dudlakova | 6-4, 6-4 | | match details | Chiasso | Clay |
| 17.04.17 | q 2 | Klaartje Liebens | Anna Klasen | 6-3, 3-6, 6-4 | | match details | ||
| 13.03.17 | q 1 | Elena Bovina | Anna Klasen | 6-3, 4-6, 6-2 | | match details |  Tampa | Clay |
| 07.03.17 | 1st round | Chiara Scholl | Anna Klasen | 6-0, 6-2 | | match details | Orlando | Clay |
| 10.10.16 | q 1 | Vivien Juhaszova | Anna Klasen | 0-6, 6-3, 6-2 | | match details | Santa Margherita | Clay |
| 03.10.16 | q 1 | Petra Krejsova | Anna Klasen | 6-3, 6-1 | | match details | Santa Margherita | Clay |
| 29.09.16 | 2nd round | Paula Ormaechea | Anna Klasen | 6-3, 6-3 | | match details | Santa Margherita | Clay |
| 27.09.16 | 1st round | Anna Klasen | Barbara Huyskes | 6-1, 6-1 | | match details | ||
| 22.09.16 | 2nd round | Naima Karamoko | Anna Klasen | 6-3, 6-3 | | match details | Santa Margherita | Clay |
| 20.09.16 | 1st round | Anna Klasen | Ai Kamiyoshihara | 6-1, 6-2 | | match details | ||
| 17.08.16 | 1st round | Irina Maria Bara | Anna Klasen | 6-2, 6-3 | | match details | Leipzig | Clay |
| 02.08.16 | 1st round | Chiara Grimm | Anna Klasen | 6-2, 6-2 | | match details | Tarvisio | Clay |
| 25.07.16 | q 1 | Anna Klasen | Chantal Skamlova | 6-1, 6-4 | | match details | Prague | Clay |
| 25.07.16 | q 2 | Anastasiya Komardina | Anna Klasen | 6-4, 6-3 | | match details | ||
| 20.07.16 | 2nd round | Camilla Scala | Anna Klasen | 2-6, 6-2, 6-3 | | match details | Schio | Clay |
| 18.07.16 | 1st round | Anna Klasen | Barbara Gatica | 7-5, 4-6, 6-1 | | match details | ||
| 05.07.16 | 1st round | Valentyna Ivakhnenko | Anna Klasen | 6-2, 6-1 | | match details | Versmold | Clay |
| 04.07.16 | q 2 | Anna Klasen | Karen Barritza | 6-4, 6-3 | | match details | ||
| 04.07.16 | qual. | Laura Schaeder | Anna Klasen | 6-4, 3-6, 6-3 | | match details | ||
| 04.07.16 | q 1 | Anna Klasen | Lisa Ponomar | 6-2, 6-1 | | match details | ||
| 24.06.16 | 1/4 | Katharina Hobgarski | Anna Klasen | 4-6, 6-4, 6-2 | | match details | Kaltenkirchen | Clay |
| 23.06.16 | 2nd round | Anna Klasen | Bianka Bekefi | 1-6, 6-2, 7-5 | | match details | ||
| 21.06.16 | 1st round | Anna Klasen | Ina Kaufinger | 3-6, 6-2, 6-0 | | match details | ||
| 15.06.16 | 1st round | Shilin Xu | Anna Klasen | 6-3, 6-4 | | match details | Braunschweig | Clay |
| 06.06.16 | q 1 | Anna Klasen | Daiana Negreanu | 6-4, 6-2 | | match details | Essen | Clay |
| 06.06.16 | q 2 | Pia Konig | Anna Klasen | 6-4, 3-6, 6-3 | | match details | ||
| 30.05.16 | q 1 | Pia Konig | Anna Klasen | 6-2, 6-4 | | match details | Brescia | Clay |
| 28.04.16 | 2nd round | Anastasiya Shoshyna | Anna Klasen | 3-6, 6-2, 6-4 | | match details |  Gyor | Clay |
| 25.04.16 | 1st round | Anna Klasen | Petra Uberalova | 1-6, 7-64, Petra Uberalova - retired | | match details | ||
| 18.03.16 | 1/4 | Marine Partaud | Anna Klasen | 6-3, 6-4 | | match details | Gonesse | Clay |
| 17.03.16 | 2nd round | Anna Klasen | Sabrina Santamaria | 4-6, 6-2, 6-1 | | match details | ||
| 15.03.16 | 1st round | Anna Klasen | Alice Bacquie | 6-4, 6-75, 6-3 | | match details | ||
| 08.03.16 | 1st round | Elixane Lechemia | Anna Klasen | 4-6, 6-1, 6-1 | | match details | Amiens | Clay |
| 07.03.16 | q 2 | Anna Klasen | Claudia Hoste Ferrer | 5-7, 6-4, 6-0 | | match details | ||
| 07.03.16 | qual. | Anna Klasen | Juliette Colard | 6-1, 6-2 | | match details | ||
| 24.08.15 | 1st round | Anna Klasen | Quirine Lemoine | 6-2, Quirine Lemoine - retired | | match details | Braunschweig | Clay |
| 24.08.15 | 2nd round | Katharina Lehnert | Anna Klasen | 7-64, 7-65 | | match details | ||
| 17.08.15 | 1st round | Guadalupe Perez Rojas | Anna Klasen | 6-2, 2-6, 6-4 | | match details | Leipzig | Clay |
| 10.08.15 | q 1 | Carolin Daniels | Anna Klasen | 7-5, 6-3 | | match details | Prague | Clay |
| 03.08.15 | q 1 | Anna Klasen | Nikola Schweinerova | 6-1, 6-1 | | match details | Plzen | Clay |
| 03.08.15 | qual. | Anna Klasen | Tereza Prochazkova | 4-6, 6-1, 6-2 | | match details | ||
| 03.08.15 | 1st round | Olga Ianchuk | Anna Klasen | 6-1, 6-1 | | match details | ||
| 27.07.15 | 1st round | Jesika Maleckova | Anna Klasen | 6-4, 6-2 | | match details | Horb | Clay |
| 13.07.15 | 2nd round | Anna Klasen | Charlotte Klasen | 6-2, 6-75, 6-2 | | match details | Nieuwpoort | Clay |
| 13.07.15 | 1/4 | Steffi Distelmans | Anna Klasen | 0-6, 6-2, 6-4 | | match details | ||
| 13.07.15 | 1st round | Anna Klasen | Anke Poncelet | 6-4, 6-3 | | match details | ||
| 22.06.15 | 1st round | Tadeja Majeric | Anna Klasen | 6-3, 6-1 | | match details | Lenzerheide | Clay |
| 15.06.15 | 1st round | Sally Peers | Anna Klasen | 6-2, 6-3 | | match details | Alkmaar | Clay |
| 08.06.15 | q 1 | Michaela Boev | Anna Klasen | 6-3, 7-5 | | match details | Essen | Clay |
| 25.05.15 | q 2 | Caroline Werner | Anna Klasen | 6-1, 1-6, 6-3 | | match details | Maribor | Clay |
| 18.05.15 | 1st round | Anna Klasen | Julia Jung | 6-1, 6-0 | | match details | Velenje | Clay |
| 18.05.15 | 2nd round | Anna Klasen | Sarah-Rebecca Sekulic | 7-64, 6-4 | | match details | ||
| 18.05.15 | 1/4 | Stefania Rubini | Anna Klasen | 6-0, 6-2 | | match details | ||
| 27.04.15 | 1st round | Anne Schaefer | Anna Klasen | 6-3, 6-2 | | match details | Santa Margherita | Clay |
| 27.04.15 | qual. | Anna Klasen | Charlotte Klasen | 6-2, 6-1 | | match details | ||
| 20.04.15 | qual. | Fiona Ferro | Anna Klasen | 6-1, 6-3 | | match details | Santa Margherita | Clay |
| 20.04.15 | q 1 | Anna Klasen | Beatrice Lombardo | 6-3, 6-1 | | match details | ||
| 13.10.14 | 1/4 | Anna Klasen | Ariadna Marti Riembau | 6-2, 6-3 | | match details | Santa Margherita | Clay |
| 13.10.14 | 1/2 | Anna Klasen | Georgia Brescia | 7-5, 3-6, 6-4 | | match details | ||
| 13.10.14 | 1st round | Anna Klasen | Federica Arcidiacono | 4-6, 6-2, 7-62 | | match details | ||
| 13.10.14 | 2nd round | Anna Klasen | Beatrice Lombardo | 6-2, 6-0 | | match details | ||
| 13.10.14 | fin | Corinna Dentoni | Anna Klasen | 6-3, 6-3 | | match details | ||
| 06.10.14 | 2nd round | Anna Klasen | Liudmila Samsonova | 6-76, 7-62, 6-4 | | match details | Santa Margherita | Clay |
| 06.10.14 | 1st round | Anna Klasen | Nozomi Fujioka | 7-5, 6-3 | | match details | ||
| 06.10.14 | 1/4 | Alexandra Nancarrow | Anna Klasen | 6-2, 6-4 | | match details | ||
| 06.10.14 | qual. | Anna Klasen | Sveva Mazzari | 4-6, 6-3, 6-4 | | match details | ||
| 29.09.14 | 1/2 | Anna Klasen | Lisa Sabino | 6-2, 7-5 | | match details | Santa Margherita | Clay |
| 29.09.14 | fin | Ilka Csoregi | Anna Klasen | 7-64, 7-63 | | match details | ||
| 29.09.14 | 1st round | Anna Klasen | Adriana Lavoretti | 7-5, 6-2 | | match details | ||
| 29.09.14 | 2nd round | Anna Klasen | Elisa Cordovani | 6-1, 6-1 | | match details | ||
| 29.09.14 | 1/4 | Anna Klasen | Jelena Simic | 6-2, 6-2 | | match details | ||
| 01.09.14 | 1/4 | Iva Mekovec | Anna Klasen | 6-1, 6-1 | | match details | Bol | Clay |
| 01.09.14 | 1st round | Anna Klasen | India Maggen | 6-1, 6-3 | | match details | ||
| 01.09.14 | 2nd round | Anna Klasen | Natalija Sipek | 6-3, 6-4 | | match details | ||
| 18.08.14 | 2nd round | Pernilla Mendesova | Anna Klasen | 1-6, 6-3, 6-3 | | match details | Braunschweig | Clay |
| 18.08.14 | 1st round | Anna Klasen | Chanel Simmonds | 6-4, 6-2 | | match details | ||
| 11.08.14 | 2nd round | Janina Toljan | Anna Klasen | 7-5, 6-3 | | match details | Innsbruck | Clay |
| 11.08.14 | 1st round | Anna Klasen | Rebecca Poikajarvi | 6-1, 7-5 | | match details | ||
| 04.08.14 | 1st round | Laura Schaeder | Anna Klasen | 5-7, 6-3, 6-4 | | match details | Hechingen | Clay |
| 28.07.14 | qual. | Manon Arcangioli | Anna Klasen | 6-3, 6-3 | | match details | Bad Saulgau | Clay |
| 28.07.14 | q 1 | Anna Klasen | Elena Rief | 6-0, 6-1 | | match details | ||
| 07.07.14 | q 1 | Amanda Carreras | Anna Klasen | 6-1, 6-3 | | match details | Biarritz | Clay |
| 30.06.14 | qual. | Lenka Jurikova | Anna Klasen | 6-4, 6-2 | | match details | Versmold | Clay |
| 30.06.14 | q 1 | Anna Klasen | Polina Pekhova | 7-66, 6-2 | | match details | ||
| 30.06.14 | q 2 | Anna Klasen | Sofia Blanco | 6-1, 6-0 | | match details | ||
| 09.06.14 | 2nd round | Kristina Barrois | Anna Klasen | 6-4, 6-3 | | match details | Essen | Clay |
| 09.06.14 | 1st round | Anna Klasen | Michele Erkens | 6-1, 6-2 | | match details | ||
| 26.05.14 | 1st round | Samantha Harris | Anna Klasen | 6-0, 7-62 | | match details | Bol | Clay |
| 05.05.14 | qual. | Amanda Carreras | Anna Klasen | 6-0, 4-6, 6-2 | | match details |  Tunis | Clay |
| 05.05.14 | q 1 | Anna Klasen | Yasmine Ben Abdallah | 6-1, 6-0 | | match details | ||
| 18.11.13 | 1/4 | Anna Klasen | Martina Colmegna | 6-2, 6-1 | | match details | Castellon | Clay |
| 18.11.13 | 1st round | Anna Klasen | Charlotte Roemer | 6-2, 6-2 | | match details | ||
| 18.11.13 | 1/2 | Lucia Cervera-Vazquez | Anna Klasen | 6-1, 6-3 | | match details | ||
| 18.11.13 | 2nd round | Anna Klasen | Maria Jose Luque Moreno | 4-6, 6-3, 6-1 | | match details | ||
| 04.11.13 | 1st round | Vivien Juhaszova | Anna Klasen | 6-3, 7-66 | | match details | Umag | Clay |
| 28.10.13 | 1st round | Milana Spremo | Anna Klasen | 6-3, 6-3 | | match details | Umag | Clay |
| 07.10.13 | 1st round | Anna Klasen | Ekaterina Tsiklauri | 7-5, 6-1 | | match details |  Antalya | Clay |
| 07.10.13 | 2nd round | Ekaterine Gorgodze | Anna Klasen | 6-4, 3-6, 6-4 | | match details | ||
| 30.09.13 | 1st round | Hua-Chen Lee | Anna Klasen | 6-2, 6-4 | | match details | Antalya | Clay |
| 23.09.13 | 1/4 | Sherazad Reix | Anna Klasen | 6-3, 6-0 | | match details | Antalya | Clay |
| 23.09.13 | 1st round | Anna Klasen | Yagmur Akdemir | 6-2, 6-0 | | match details | ||
| 23.09.13 | 2nd round | Anna Klasen | Marie Benoit | 6-2, 6-2 | | match details | ||
| 02.09.13 | 1st round | Sonja Larsen | Anna Klasen | 6-3, 2-6, 6-2 | | match details | Berlin | Clay |
| 19.08.13 | 1st round | Anna Klasen | Grace Maleka Mpassy-Nzoumba | 6-2, 6-1 | | match details | Braunschweig | Clay |
| 19.08.13 | 2nd round | Kristina Barrois | Anna Klasen | 1-6, 6-2, 6-3 | | match details | ||
| 12.08.13 | 2nd round | Yuuki Tanaka | Anna Klasen | 6-4, 6-3 | | match details | Ratingen | Clay |
| 12.08.13 | 1st round | Anna Klasen | Tess Sugnaux | 6-3, 6-2 | | match details | ||
| 05.08.13 | q 1 | Anna Klasen | Lena Lutzeier | 6-4, 6-3 | | match details | Koksijde | Clay |
| 05.08.13 | qual. | Anna Klasen | Bernarda Pera | 7-5, 6-4 | | match details | ||
| 05.08.13 | 1st round | Ankita Raina | Anna Klasen | 6-2, 6-3 | | match details | ||
| 29.07.13 | 1st round | Olga Ianchuk | Anna Klasen | 3-6, 6-3, 6-4 | | match details | Rovereto | Clay |
| 22.07.13 | 1/4 | Zuzana Luknarova | Anna Klasen | 6-4, 6-3 | | match details | Bad Waltersdorf | Clay |
| 22.07.13 | 1st round | Anna Klasen | Denisa Kulhankova | 6-2, 6-1 | | match details | ||
| 22.07.13 | 2nd round | Anna Klasen | Lena Reichel | 6-0, 7-5 | | match details | ||
| 15.07.13 | q 1 | Anna Klasen | Amaia Ormazabal-Oregui | 6-0, 6-2 | | match details | Contrexeville | Clay |
| 15.07.13 | qual. | Alix Collombon | Anna Klasen | 7-5, 7-5 | | match details | ||
| 15.07.13 | q 2 | Anna Klasen | Tsveta Dimitrova | 6-0, 6-0 | | match details | ||
| 01.07.13 | 1/4 | Anna Klasen | Anastasiya Vasylyeva | 6-1, 6-2 | | match details | Brussels | Clay |
| 01.07.13 | 1/2 | Anna Klasen | Steffi Distelmans | 6-3, 6-2 | | match details | ||
| 01.07.13 | 1st round | Anna Klasen | Monique Zuur | 6-2, 6-4 | | match details | ||
| 01.07.13 | fin | Anna Klasen | Eugeniya Pashkova | 6-3, 6-3 | | match details | ||
| 01.07.13 | 2nd round | Anna Klasen | Oceane Adam | 6-2, 6-1 | | match details | ||
| 24.06.13 | 1st round | Janina Toljan | Anna Klasen | 7-5, 4-6, 6-1 | | match details | Breda | Clay |
| 17.06.13 | qual. | Anna Klasen | Julyette Steur | 6-4, 6-3 | | match details | Koeln | Clay |
| 17.06.13 | 1st round | Nathalia Rossi | Anna Klasen | 1-6, 6-1, 6-4 | | match details | ||
| 17.06.13 | q 2 | Anna Klasen | Laura Correia | 7-5, 6-2 | | match details | ||
| 10.06.13 | 1st round | Laura-Ioana Paar | Anna Klasen | 6-4, 6-4 | | match details | Essen | Clay |
| 29.04.13 | q 1 | Ivonne Cavalle-Reimers | Anna Klasen | 6-2, 6-1 | | match details | Wiesbaden | Clay |
| 22.04.13 | qual. | Katerina Siniakova | Anna Klasen | 6-0, 6-2 | | match details | Chiasso | Clay |
| 22.04.13 | q 2 | Anna Klasen | Christina Oberger | 6-2, 6-2 | | match details | ||
| 15.04.13 | 2nd round | Bernarda Pera | Anna Klasen | 6-1, 6-0 | | match details | Sibenik | Clay |
| 15.04.13 | 1st round | Anna Klasen | Aleksandra Zenovka | 6-4, 6-0 | | match details | ||
| 08.04.13 | 1st round | Bernarda Pera | Anna Klasen | 6-0, 7-64 | | match details | Bol | Clay |
| 11.03.13 | 1st round | Daria Salnikova | Anna Klasen | 6-2, 5-7, 7-62 | | match details | Le Havre | Clay |
| 04.03.13 | 1st round | Alexandra Rey | Anna Klasen | 7-63, 7-5 | | match details | Amiens | Clay |
| 24.09.12 | q 1 | Anna Klasen | Marta Hnatyshyn | 6-1, 6-1 | | match details | Prague | Clay |
| 24.09.12 | qual. | Karolina Stuchla | Anna Klasen | 6-4, 6-2 | | match details | ||
| 03.09.12 | q 2 | Teodora Mircic | Anna Klasen | 6-4, 6-2 | | match details | Mestre | Clay |
| 03.09.12 | q 1 | Anna Klasen | Lisa Sabino | 6-1, 5-3, Lisa Sabino - retired | | match details | ||
| 20.08.12 | 1/2 | Cindy Burger | Anna Klasen | 7-63, 7-69 | | match details | Braunschweig | Clay |
| 20.08.12 | 1/4 | Anna Klasen | Julia Lohoff | 6-2, 6-4 | | match details | ||
| 20.08.12 | 1st round | Anna Klasen | Sonja Larsen | 6-3, 7-60 | | match details | ||
| 20.08.12 | 2nd round | Anna Klasen | Jasmina Kajtazovic | 3-6, 6-4, 6-2 | | match details | ||
| 13.08.12 | 1st round | Franziska Koenig | Anna Klasen | 7-65, 7-5 | | match details | Ratingen | Clay |
| 06.08.12 | q 1 | Lena-Marie Hofmann | Anna Klasen | 6-3, 7-5 | | match details | Hechingen | Clay |
| 30.07.12 | 1st round | Anna Klasen | Anna Zaja | 2-6, 7-62, 7-5 | | match details | Bad Saulgau | Clay |
| 30.07.12 | qual. | Estelle Guisard | Anna Klasen | 6-75, 6-4, 6-2 | | match details | ||
| 30.07.12 | q 1 | Anna Klasen | Daria Afanasyeva | 6-1, 6-2 | | match details | ||
| 30.07.12 | 2nd round | Rocio De La Torre-Sanchez | Anna Klasen | 6-3, 7-5 | | match details | ||
| 23.07.12 | 1st round | Natela Dzalamidze | Anna Klasen | 7-64, 1-6, 6-3 | | match details | Horb | Clay |
| 16.07.12 | 1st round | Anna Klasen | Cristina Dinu | 6-3, 7-64 | | match details | Darmstadt | Clay |
| 16.07.12 | 2nd round | Masa Zec-Peskiric | Anna Klasen | 3-6, 6-4, 7-5 | | match details | ||
| 16.07.12 | q 1 | Anna Klasen | Chantal Skamlova | 6-1, 6-3 | | match details | ||
| 16.07.12 | qual. | Anna Klasen | Christina Shakovets | 6-1, 6-4 | | match details | ||
| 02.07.12 | 1st round | Daniela Seguel | Anna Klasen | 6-4, 2-6, 7-65 | | match details | Brussels | Clay |
| 25.06.12 | qual. | Valeria Podda | Anna Klasen | 6-4, 6-2 | | match details | Breda | Clay |
| 25.06.12 | 1st round | Agnese Zucchini | Anna Klasen | 7-60, 3-6, 6-0 | | match details | ||
| 25.06.12 | q 1 | Anna Klasen | Anouk Tigu | 1-6, 6-1, 6-4 | | match details | ||
| 18.06.12 | 2nd round | Yvonne Neuwirth | Anna Klasen | 6-4, 6-1 | | match details | Koeln | Clay |
| 18.06.12 | qual. | Anna Klasen | Jil Nora Engelmann | 6-4, 7-62 | | match details | ||
| 18.06.12 | 1st round | Anna Klasen | Katharina Negrin | 6-3, 6-2 | | match details | ||
| 18.06.12 | q 2 | Anna Klasen | Alexandra Cannizzaro | 7-5, 6-1 | | match details | ||
| 07.05.12 | qual. | Anna Klasen | Barbara Bonic | 5-7, 6-3, 7-64 | | match details | Bad Saarow | Clay |
| 07.05.12 | 1st round | Anna Klasen | Anaeve Pain | 6-4, 6-1 | | match details | ||
| 07.05.12 | 2nd round | Natalija Stevanovic | Anna Klasen | 6-1, 6-3 | | match details | ||
| 07.05.12 | q 2 | Anna Klasen | Lisa Brinkmann | 5-7, 6-2, 6-0 | | match details | ||
| 22.08.11 | 1st round | Anna Klasen | Majlena Pedersen | 6-2, 6-75, 6-1 | | match details | Braunschweig | Clay |
| 22.08.11 | 2nd round | Syna Kayser | Anna Klasen | 6-2, 6-2 | | match details | ||
| 15.08.11 | 1st round | Anna Klasen | Sarah Urbanek | 6-2, 6-1 | | match details | Ratingen | Clay |
| 15.08.11 | 1/2 | Elizaveta Ianchuk | Anna Klasen | 6-0, 6-4 | | match details | ||
| 15.08.11 | 2nd round | Anna Klasen | Karen Barritza | 6-2, 5-7, 6-1 | | match details | ||
| 15.08.11 | 1/4 | Anna Klasen | Sandra Zaniewska | 6-1, 6-0 | | match details | ||
| 08.08.11 | q 2 | Anna Klasen | Chihiro Takayama | 4-6, 6-3, 6-3 | | match details | Versmold | Clay |
| 08.08.11 | qual. | Anna Klasen | Syna Kayser | 7-64, 6-4 | | match details | ||
| 08.08.11 | 1st round | Anna Klasen | Nikola Hofmanova | 6-3, 3-6, 6-4 | | match details | ||
| 08.08.11 | 2nd round | Mariana Duque-Marino | Anna Klasen | 6-1, 6-3 | | match details | ||
| 08.08.11 | q 1 | Anna Klasen | Tatiana Silbereisen | 6-1, 6-3 | | match details | ||
| 01.08.11 | q 1 | Anna Klasen | Julia Schiller | 6-2, 6-3 | | match details | Hechingen | Clay |
| 01.08.11 | qual. | Tereza Mrdeza | Anna Klasen | 6-3, 6-3 | | match details | ||
| 01.08.11 | q 2 | Anna Klasen | Dalila Jakupovic | 4-6, 6-4, 7-61 | | match details | ||
| 18.07.11 | q 1 | Anna Klasen | Karolina Pondusova | 6-2, 6-1 | | match details | Horb | Clay |
| 18.07.11 | qual. | Steffi Bachofer | Anna Klasen | 6-2, 1-6, 6-0 | | match details | ||
| 18.07.11 | 1st round | Anna Klasen | Barbara Bonic | 6-1, Barbara Bonic - retired | | match details | ||
| 18.07.11 | 2nd round | Diana Sumova | Anna Klasen | 1-6, 6-3, 7-5 | | match details | ||
| 11.07.11 | 1st round | Diana Sumova | Anna Klasen | 3-6, 6-1, 6-4 | | match details | Darmstadt | Clay |
| 11.07.11 | q 1 | Anna Klasen | Tereza Martincova | 6-73, 6-4, 6-0 | | match details | ||
| 11.07.11 | qual. | Anna Klasen | Karin Morgosova | 7-5, 6-1 | | match details | ||
| 02.05.11 | q 1 | Lisa Ehrensberger | Anna Klasen | 6-3, 1-6, 6-2 | | match details | Wiesbaden | Clay |
| 23.08.10 | 1st round | Nikola Horakova | Anna Klasen | 6-4, 6-2 | | match details | Braunschweig | Clay |
| 16.08.10 | 2nd round | Anna Klasen | Sandra Martinovic | 5-7, 6-3, 6-2 | | match details | Wahlstedt | Clay |
| 16.08.10 | 1/4 | Olga Brozda | Anna Klasen | 6-73, 7-63, 6-3 | | match details | ||
| 16.08.10 | 1st round | Anna Klasen | Linda Berlinecke | 3-1, Linda Berlinecke - retired | | match details |
