Stadion: Court 2 Round: 62 Ground: Clay
| UTR Pro Tennis Series - Mülheim | 2021/10/17 08:30 | Quin Verstegen v Jose Antonio Rodriguez Rodriguez | 6-3,6-4 |
| UTR Pro Tennis Series - Mülheim | 2021/10/16 14:00 | Quin Verstegen v Diego Balderas | 6-0,4-1 |
| UTR Pro Tennis Series - Mülheim | 2021/10/14 07:00 | Quin Verstegen v Christian Hansen | 3-6,6-3,3-6 |
| UTR Pro Tennis Series - Mülheim | 2021/10/13 11:30 | Quin Verstegen v Tom Gentzsch | 4-6,2-6 |
| UTR Pro Tennis Series - Mülheim | 2021/10/12 12:30 | Quin Verstegen v Alen Moritz Hodzic | 6-7,4-6 |
| UTR Pro Tennis Series - Mülheim | 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 |