| UTR Pro Tennis Series Mulheim | 2021/10/13 11:30 | Quin Verstegen v Tom Gentzsch | 4-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 11:30 | Filip Duda v Tom Gentzsch | 6-4,5-2 |
| ITF M25 Eupen | 2021/09/07 10:05 | Guy Den Heijer v Tom Gentzsch | 6-3,6-4 |
| ITF M25 Eupen | 2021/09/06 13:30 | Nico Hornitschek v Tom Gentzsch | 4-6,4-6 |
| ITF M25 Eupen | 2021/09/05 07:30 | Tom Gentzsch v Olivier Rojas | 6-3,7-5 |
| 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 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 12:30 | Quin Verstegen v Alen Moritz Hodzic | 6-7,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 08:30 | Alen Moritz Hodzic v Christian Hansen | 6-7,7-6,3-5 |
| ITF M15 Forbach | 2021/09/26 10:00 | Alen Moritz Hodzic v Hazem Naw | 4-6,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 08:30 | Alen Moritz Hodzic v Jurriaan Bol | 2-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/24 09:30 | Benjamin Dhoe v Alen Moritz Hodzic | 6-2,6-1 |
| UTR Pro Tennis Series Mulheim | 2021/09/23 09:30 | Johann Willems v Alen Moritz Hodzic | 0-0 |
| UTR Pro Tennis Series Mulheim | 2021/09/22 09:30 | Maxence Broville v Alen Moritz Hodzic | 5-7,5-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/20 08:00 | Mikhail Minakov v Alen Moritz Hodzic | 2-6,6-2,5-0 |