14.11.20 | fin | Harri Heliovaara/Emil Ruusuvuori | Lukas Klein/Alex Molcan | 6-4, 6-3 |  | match details | Bratislava Challenger | I. hard |
13.11.20 | 1/2 | Lukas Klein/Alex Molcan | Karol Drzewiecki/Szymon Walkow | 7-65, 6-3 |  | match details |
12.11.20 | 1/4 | Lukas Klein/Alex Molcan | James Cerretani/Luca Margaroli | 6-77, 6-4, 10-5 |  | match details |
11.11.20 | 1st round | Lukas Klein/Alex Molcan | Roman Safiullin/Alexey Vatutin | 7-5, 6-3 |  | match details |
11.03.20 | 1st round | James Cerretani/Szymon Walkow | Lukas Klein/Alex Molcan | Lukas Klein/Alex Molcan - walk over |  | match details | Nur Sultan | I. hard |
07.11.19 | 1/4 | Frederik Nielsen/Tim Puetz | Lukas Klein/Alex Molcan | 6-4, 6-2 |  | match details | Bratislava Challenger | I. hard |
06.11.19 | 1st round | Lukas Klein/Alex Molcan | Tuna Altuna/Scott Puodziunas | 7-5, 7-5 |  | match details |
22.06.19 | fin | Sander Gille/Joran Vliegen | Lukas Klein/Alex Molcan | 6-2, 7-5 |  | match details | Bratislava Challenger | Clay |
21.06.19 | 1/2 | Lukas Klein/Alex Molcan | Nathaniel Lammons/Antonio Sancic | 7-5, 6-3 |  | match details |
20.06.19 | 1/4 | Lukas Klein/Alex Molcan | Marcelo Arevalo/Miguel-Angel Reyes-Varela | 2-6, 6-3, 10-7 |  | match details |
19.06.19 | 1st round | Lukas Klein/Alex Molcan | Pietro Rondoni/Jeroen Vanneste | 3-6, 7-65, 11-9 |  | match details |
09.11.16 | 1st round | Mariusz Fyrstenberg/Nenad Zimonjic | Lukas Klein/Alex Molcan | 6-4, 7-62 |  | match details | Bratislava Challenger | I. hard |
28.03.16 | 1st round | Miki Jankovic/Zeljko Milovic | Lukas Klein/Alex Molcan | 6-4, 7-5 |  | match details | Greece F2 | Hard |
15.02.16 | 1st round | Lukas Klein/Alex Molcan | Alexander Lazov/Lukas Mugevicius | 3-6, 6-0, 10-8 |  | match details | Turkey F7 | Hard |
15.02.16 | 1/4 | Tom Schonenberg/Marc Sieber | Lukas Klein/Alex Molcan | Lukas Klein/Alex Molcan - walk over |  | match details |
08.02.16 | 1/2 | Lukas Klein/Alex Molcan | Tuna Altuna/Altug Celikbilek | 7-5, 6-4 |  | match details | Turkey F6 | Hard |
08.02.16 | fin | Lukas Klein/Alex Molcan | Vadim Alekseenko/Frederico Ferreira Silva | 7-67, 7-65 |  | match details |
08.02.16 | 1st round | Lukas Klein/Alex Molcan | Anton Desyatnik/Vladislav Gorodetsky | 6-4, 6-4 |  | match details |
08.02.16 | 1/4 | Lukas Klein/Alex Molcan | Baris Erguden/Issei Okamura | 6-71, 6-2, 10-8 |  | match details |
09.11.15 | 1st round | Ilija Bozoljac/Igor Zelenay | Lukas Klein/Alex Molcan | 6-4, 6-2 |  | match details | Bratislava Challenger | I. hard |
05.10.15 | 1st round | Pascal Brunner/Lucas Miedler | Lukas Klein/Alex Molcan | 6-2, 6-3 |  | match details | Turkey F40 | Hard |