Stadium: Centre Court Round: 62 Ground: Clay
| ITF M25 Trier | 2021/08/25 09:00 | Tom Gentzsch v Ryan Nijboer | 3-6,4-6 |
| ITF M25 Trier | 2021/08/23 13:30 | Paul Valsecchi v Tom Gentzsch | 5-7,3-6 |
| ITF M25 Prostejov | 2021/08/16 07:55 | Simon Malis v Tom Gentzsch | 6-4,5-7,10-8 |
| ITF M25 Prostejov | 2021/08/15 08:00 | Tomas Krcma v Tom Gentzsch | 0-6,2-6 |
| Challenger Meerbusch | 2021/08/08 08:00 | Jesper De Jong v Tom Gentzsch | 6-1,6-3 |
| ITF M15 Skopje | 2021/06/01 08:00 | Niels Visker v Tom Gentzsch | 6-4,6-1 |
| ITF M15 Skopje | 2021/05/31 08:00 | Tom Gentzsch v Louis Allen | 7-6,2-6,13-11 |
| ITF M15 Skopje | 2021/05/30 07:00 | Aloys J W Van Baal v Tom Gentzsch | 1-6,7-5,7-10 |
| ITF M15 Huy | 2021/08/23 16:15 | Olivier Rojas v Maikel De Boes | 6-3,3-6,9-11 |
| ITF M15 Huy | 2021/08/22 15:50 | Olivier Rojas v Kylian Collignon | 6-2,6-2 |
| ITF M25 Koksijde | 2021/08/19 09:35 | Mathieu Perchicot v Olivier Rojas | 5-7,6-2,6-2 |
| ITF M25 Koksijde | 2021/08/17 08:00 | Olivier Rojas v Alexander Kotzen | 6-4,6-3 |
| ITF M25 Koksijde | 2021/08/16 09:40 | Raphael Calzi v Olivier Rojas | 3-6,7-5,4-10 |
| ITF M15 Monastir | 2021/05/10 09:00 | Olivier Rojas v Yuta Kikuchi | 1-6,2-6 |
| ITF M15 Monastir | 2021/05/09 11:00 | Olivier Rojas v Julian Gimenez | 4-6,7-5,10-7 |
| ITF M15 Monastir | 2021/05/03 13:00 | Olivier Rojas v Omni Kumar | 6-4,3-6,8-10 |