Stadium: Court 6 Round: 62 Ground: Clay
| ITF M25 Kassel | 2023/07/11 11:10 | Milan Welte v Stepan Mruzek | 6-2,6-1 |
| ITF M25 Kassel | 2023/07/10 13:40 | Noel Larwig v Stepan Mruzek | 3-6,1-6 |
| ITF M25 Poprad | 2023/06/20 09:25 | Peter Benjamin Privara v Stepan Mruzek | 7-5,7-5 |
| ITF M25 Poprad | 2023/06/19 10:25 | Michal Krajci v Stepan Mruzek | 4-6,6-7 |
| ITF M25 Poprad | 2023/06/18 11:00 | Hans Albert Schubert v Stepan Mruzek | 3-6,5-7 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 13:00 | Peter Goldsteiner v Stepan Mruzek | 6-0,6-0 |
| ITF M25 Most | 2023/05/23 08:00 | Matthew William Donald v Stepan Mruzek | 6-4,6-3 |
| ITF M25 Prague | 2023/05/16 10:35 | Stepan Mruzek v Matthew William Donald | 3-6,2-6 |
| ITF M15 Celje | 2023/06/26 13:05 | Kaj Quirijns v Radovan Michalik | 1-6,1-6 |
| ITF M15 Litija | 2023/06/12 07:00 | Kaj Quirijns v Tim Heger | 3-6,4-6 |
| 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 |