Estadio: Court 3 Round: 54 Ground: Clay
| ITF M15 Heraklion | 2022/10/30 10:00 | Kaj Quirijns v Thibault Verdier | 1-6,5-7 |
| ITF M25 Trimbach | 2022/03/14 13:25 | Kaj Quirijns v Gabriele Moghini | 4-6,3-6 |
| ITF M25 Canberra | 2022/02/13 03:00 | Zac Osborne v Kaj Quirijns | 6-3,6-1 |
| ITF M15 Ithaca | 2021/10/06 18:10 | Jakob Schnaitter v Kaj Quirijns | 7-5,6-3 |
| ITF M15 Ithaca | 2021/10/05 13:00 | Chanchai Sookton-Eng v Kaj Quirijns | 2-6,6-3,8-10 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Kaj Quirijns v Luca Castagnola | 2-6,4-6 |
| ITF M25 Trimbach | 2021/03/08 11:05 | Kaj Quirijns v Johann Lars | 3-6,6-7 |
| ITF M15 Warmbad-Villach | 2023/05/22 11:10 | Tim Heger v Noah Schlagenhauf | 5-7,6-7 |
| ITF M15 Warmbad-Villach | 2023/05/21 12:00 | Pietro Pampanin v Tim Heger | 4-6,4-6 |
| ITF M15 Krsko | 2023/05/17 08:00 | Tomas Lanik v Tim Heger | 6-2,6-3 |
| ITF M15 Krsko | 2023/05/15 12:30 | Andrej Krajcik v Tim Heger | 1-6,1-6 |
| ITF M15 Osijek | 2023/05/02 10:15 | Andrej Nedic v Tim Heger | 6-2,6-0 |
| ITF M15 Osijek | 2023/05/01 08:00 | Daniele Minighini v Tim Heger | 3-6,6-3,8-10 |
| ITF M25 Split | 2023/04/17 15:30 | Tim Heger v Marsel Znuderl | 4-6,4-6 |
| ITF M25 Split | 2023/04/17 12:00 | Tim Heger v Syl Gaxherri | 6-3,6-3 |