| UTR Pro Tennis Series Mulheim | 2022/07/02 10:30 | Aaron James Williams v Keisidis, Christos | 6-4,2-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2022/10/05 10:30 | Pierre, Hugo v Keisidis, Christos | 6-3,5-2 |
| UTR Pro Tennis Series Mulheim | 2022/10/04 06:00 | Jahn, Jeremy v Keisidis, Christos | 6-3,6-2 |
| UTR Pro Tennis Series Athens | 2022/08/14 06:30 | Keisidis, Christos v Sergis Kyratzis | 6-4,2-6,7-5 |
| UTR Pro Tennis Series Athens | 2022/08/12 05:00 | Denys Klok v Keisidis, Christos | 6-4,6-1 |
| UTR Pro Tennis Series Athens | 2022/08/11 06:30 | Wadym Konowczuk v Keisidis, Christos | 6-7,2-6 |
| UTR Pro Tennis Series Athens | 2022/08/08 05:00 | Keisidis, Christos v Tadija Radovanovic | 6-0,3-6,6-4 |
| UTR Pro Tennis Series Athens | 2022/08/07 06:30 | Keisidis, Christos v Paris Gemouchidis | 6-2,5-3 |
| UTR Pro Tennis Series Athens | 2022/08/04 06:30 | Tadija Radovanovic v Keisidis, Christos | 6-2,6-7,1-6 |
| UTR Pro Tennis Series Mulheim | 2022/10/04 06:00 | Pierre, Hugo v Aaron James Williams | 6-4,6-7,6-7 |
| UTR Pro Tennis Series Mulheim | 2022/10/03 09:00 | Aaron James Williams v Mikalai Haliak | 4-6,2-6 |
| ITF M15 Haren | 2022/08/31 12:55 | Marlon Vankan v Aaron James Williams | 7-5,6-3 |
| ITF M15 Haren | 2022/08/30 08:30 | Aaron James Williams v Jacco Arends | 6-0,6-4 |
| ITF M15 Haren | 2022/08/29 09:00 | Edison Ambarzumjan v Aaron James Williams | 1-6,4-6 |
| ITF M15 Haren | 2022/08/28 10:00 | Umeoka, Yudai v Aaron James Williams | 4-6,1-6 |
| ITF M25 Oldenzaal | 2022/08/21 16:30 | Aaron James Williams v Martin Benes | 6-4,4-6,2-10 |
| ITF M25 Oldenzaal | 2022/08/21 08:30 | Aaron James Williams v Aregger, Lars | 6-4,6-0 |