| 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 | Quin Verstegen v Filip Duda | 6-2,3-6,5-4 |
| ITF M15 Troisdorf | 2021/05/09 13:00 | Quin Verstegen v Victor Ernaelsteen | 0-6,5-7 |
| ITF M15 Monastir | 2021/01/10 08:30 | Matteo Tinelli v Quin Verstegen | 7-5,7-6 |
| ITF M15 Monastir | 2021/01/03 13:00 | Thomas Deschamps v Quin Verstegen | 6-2,6-1 |
| ITF M15 Monastir | 2020/12/28 09:00 | Axel Garcian v Quin Verstegen | 6-3,7-5 |
| ITF M15 Forbach | 2020/09/28 07:00 | Luca Castelnuovo v Quin Verstegen | 6-3,6-1 |
| ITF M25 Plaisir | 2020/09/13 07:30 | Quin Verstegen v Hugo Pontico | 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 |
| ITF M25 Prostejov | 2021/08/15 08:00 | Tomas Krcma v Tom Gentzsch | 0-6,2-6 |