Stadium: Court 1 Round: 27 Ground: Hardcourt indoor
| ITF M25 Hamburg | 2021/10/21 09:55 | Louis Wessels v Kai Wehnelt | 7-5,4-6,6-3 |
| ITF M25 Hamburg | 2021/10/20 08:00 | Louis Wessels v Jeremy Jahn | 6-1,7-6 |
| Challenger Napoli | 2021/10/11 08:30 | Louis Wessels v Alvaro Lopez San Martin | 6-7,4-6 |
| ITF M25 Skopje | 2021/10/03 09:00 | Louis Wessels v Matteo Arnaldi | 1-6,0-6 |
| ITF M25 Skopje | 2021/10/02 09:30 | Aldin Setkic v Louis Wessels | 2-6,7-6,3-6 |
| ITF M25 Skopje | 2021/10/01 14:30 | Louis Wessels v Clement Tabur | 7-5,6-1 |
| ITF M25 Skopje | 2021/10/01 08:00 | Louis Wessels v Besir Durguti | 6-0,6-1 |
| ITF M25 Skopje | 2021/09/29 09:40 | Louis Wessels v Felix Gill | 6-1,6-2 |
| ITF M25 Hamburg | 2021/10/21 07:55 | Martin Krumich v Viktor Durasovic | 6-3,6-7,7-6 |
| ITF M25 Hamburg | 2021/10/19 13:30 | Andrew Paulson v Martin Krumich | 6-3,6-7,3-6 |
| ITF M25 Prague | 2021/10/06 12:10 | Martin Krumich v Marek Gengel | 7-5,5-7,4-6 |
| ITF M25 Budapest | 2021/10/01 10:00 | Martin Krumich v Mate Valkusz | 2-6,1-6 |
| ITF M25 Budapest | 2021/09/30 11:35 | Gergely Madarasz v Martin Krumich | 4-6,6-4,6-7 |
| ITF M25 Budapest | 2021/09/28 07:25 | Martin Krumich v Stepan Pecak | 6-2,6-3 |
| ITF M25 Pardubice | 2021/09/22 10:20 | Martin Krumich v Maciej Rajski | 7-6,3-6,6-7 |
| ITF M15 Sozopol | 2021/09/18 07:00 | Kai Wehnelt v Martin Krumich | 6-4,6-2 |