| UTR Pro Tennis Series Mulheim | 2021/10/14 07:00 | 베르스테겐, 퀸 v Hansen, Christian | 3-6,6-3,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 11:30 | 베르스테겐, 퀸 v Tom Gentzsch | 4-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 12:30 | 베르스테겐, 퀸 v Alen Moritz Hodzic | 6-7,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 08:30 | 베르스테겐, 퀸 v 두다, 필리프 | 6-2,3-6,5-4 |
| ITF M15 Troisdorf | 2021/05/09 13:00 | 베르스테겐, 퀸 v 에르나엘스틴, 빅토르 | 0-6,5-7 |
| ITF M15 Monastir | 2021/01/10 08:30 | Tinelli, Matteo v 베르스테겐, 퀸 | 7-5,7-6 |
| ITF M15 Monastir | 2021/01/03 13:00 | Deschamps, Thomas (Fra) v 베르스테겐, 퀸 | 6-2,6-1 |
| ITF M15 Monastir | 2020/12/28 09:00 | 가르시안, 악셀 v 베르스테겐, 퀸 | 6-3,7-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 11:30 | Balderas, Diego v 드호, 벤자민 | 0-6,0-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 08:30 | Balderas, Diego v Willems, Johann | 0-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 10:20 | 마레로 쿠르벨로, 이반 v Balderas, Diego | 6-1,5-1 |