Stadium: Court 3 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/10/14 08:00 | Marek Gengel v Michal Mikula | 6-4,6-3 |
| ITF M15 Sharm El Sheikh | 2021/10/13 08:00 | Marek Gengel v Romain Faucon | 6-2,6-4 |
| ITF M25 Prague | 2021/10/08 09:00 | Khumoyun Sultanov v Marek Gengel | 3-6,6-3,6-4 |
| ITF M25 Prague | 2021/10/07 10:15 | Jakub Paul v Marek Gengel | 2-6,4-6 |
| ITF M25 Prague | 2021/10/06 12:10 | Martin Krumich v Marek Gengel | 7-5,5-7,4-6 |
| Challenger Orleans | 2021/09/26 12:50 | Maxime Janvier v Marek Gengel | 6-2,7-5 |
| Challenger Biel | 2021/09/19 12:40 | Alexander Shevchenko v Marek Gengel | 6-3,6-3 |
| Challenger Rennes | 2021/09/12 08:00 | Kenny de Schepper v Marek Gengel | 6-4,6-1 |
| ITF M15 Sharm El Sheikh | 2021/10/14 08:00 | Neil Oberleitner v Lorenzo Bocchi | 3-6,6-1,7-6 |
| ITF M15 Sharm El Sheikh | 2021/10/07 10:00 | Gabriel Decamps v Neil Oberleitner | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/10/06 13:40 | Neil Oberleitner v Saba Purtseladze | 7-5,7-6 |
| ITF M25 Pretoria | 2021/09/28 07:00 | Neil Oberleitner v Devin Badenhorst | 6-4,4-6,7-10 |
| ITF M25 Pretoria | 2021/09/27 08:30 | Neil Oberleitner v Benjamin Scott | 6-2,6-0 |
| ITF M25 Johannesburg | 2021/09/22 08:30 | Daniel Cukierman v Neil Oberleitner | 6-2,6-3 |
| ITF M25 Johannesburg | 2021/09/21 07:00 | Neil Oberleitner v Joshua Howard-Tripp | 6-3,6-1 |
| ITF M25 Johannesburg | 2021/09/20 08:15 | Neil Oberleitner v Alexey Dubinin | 6-0,6-1 |