Stadium: Court 6 Round: 62 Ground: Clay
| ITF M15 Skopje | 2021/05/30 07:00 | Aloys J W Van Baal v Tom Gentzsch | 1-6,7-5,7-10 |
| ITF M15 Heraklion | 2021/05/17 07:00 | Milan Welte v Tom Gentzsch | 6-0,6-3 |
| ITF M15 Heraklion | 2021/05/16 06:30 | Cheraag Bajwa v Tom Gentzsch | 2-6,1-6 |
| ITF M25 Meerbusch | 2021/04/12 12:00 | Alexey Vatutin v Tom Gentzsch | 6-3,6-1 |
| ITF M25 Meerbusch | 2021/04/12 07:30 | Tom Gentzsch v Fred Olivier Schommer | 7-6,6-2 |
| ITF M15 Skopje | 2021/05/30 07:00 | Louis Allen v Leonid Sheyngezikht | 6-4,7-5 |
| ITF M15 București | 2021/05/24 08:00 | Valentin Royer v Louis Allen | 6-3,6-1 |
| ITF M15 Monastir | 2021/04/12 08:00 | Remy Bertola v Louis Allen | 6-2,6-0 |
| ITF M15 Monastir | 2021/04/11 08:00 | Luigi Castelletti v Louis Allen | 4-6,6-2,3-10 |
| ITF M15 Monastir | 2021/04/05 09:00 | Louis Allen v Fabio Coelho | 5-7,6-7 |
| ITF M15 Monastir | 2021/04/04 10:30 | Alessandro-D Ventre v Louis Allen | 2-6,6-3,3-10 |
| ITF M15 Monastir | 2021/03/28 09:00 | Olivier Rojas v Louis Allen | 6-2,6-0 |
| ITF M15 Monastir | 2021/03/21 13:00 | Louis Allen v Aliaksandr Liaonenka | 3-6,1-6 |