| UTR Pro Tennis Series - Mulheim | 2021/10/14 08:30 | Tom Gentzsch v Alen Moritz Hodzic | 4-6,6-2,5-4 |
| 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 |
| UTR Pro Tennis Series - Mulheim | 2021/10/14 07:00 | Quin Verstegen v Christian Hansen | 3-6,6-3,3-6 |
| UTR Pro Tennis Series - Mulheim | 2021/10/13 11:30 | Filip Duda v Christian Hansen | 6-2,2-5 |
| UTR Pro Tennis Series - Mulheim | 2021/10/11 08:30 | Alen Moritz Hodzic v Christian Hansen | 6-7,7-6,3-5 |
| ITF - M25 Meerbusch | 2021/04/13 11:00 | Christian Hansen v Paul Woerner | 2-6,3-6 |
| ITF - M25 Meerbusch | 2021/04/12 11:30 | Christian Hansen v Hugo Pierre | 6-4,6-7,10-6 |
| ITF - M25 Meerbusch | 2021/04/12 07:30 | Adrian Obert v Christian Hansen | 6-4,2-6,6-10 |
| ITF - M15 Monastir | 2021/03/01 13:00 | Stefano Reitano v Christian Hansen | 7-6,6-2 |
| ITF - M15 Monastir | 2021/02/28 10:30 | Fausto Tabacco v Christian Hansen | 5-7,2-6 |