Stadium: Court 1 Round: 62 Ground: Clay
| ITF M15 Heraklion | 2023/03/19 07:00 | Ioannis Kountourakis v Mark Neyelov | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2023/02/20 09:00 | Ioannis Kountourakis v Ji Hoon Son | 3-6,1-6 |
| ITF M15 Sharm El Sheikh | 2023/02/19 11:30 | Ioannis Kountourakis v Ioan A Teglas | 6-3,7-5 |
| ITF M15 Sharm El Sheikh | 2023/02/14 08:00 | Sebastian Sorger v Ioannis Kountourakis | 6-4,6-3 |
| ITF M15 Sharm El Sheikh | 2023/02/13 08:00 | Ioannis Kountourakis v Matic Dimic | 7-5,0-6,10-8 |
| ITF M15 Sharm El Sheikh | 2023/02/12 10:00 | Ioannis Kountourakis v Pietro Schiavetti | 6-3,3-6,10-6 |
| ITF M15 Monastir | 2023/01/30 10:15 | Andrew Rogers v Ioannis Kountourakis | 7-5,6-2 |
| ITF M15 Monastir | 2023/01/29 09:00 | Anthony Shumsky v Ioannis Kountourakis | 2-6,0-6 |
| 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 M25 Prague | 2023/05/15 10:30 | Daniel Siniakov v Stepan Mruzek | 7-6,4-6,9-11 |
| ITF M25 Prague | 2023/05/14 10:00 | Stepan Mruzek v Jiri Jindacek | 7-5,6-4 |
| ITF M15 Osijek | 2023/05/01 07:55 | Stepan Mruzek v Michael Gloeckler | 6-4,4-6,10-12 |
| ITF M15 Antalya | 2023/04/02 07:00 | Denis Klok v Stepan Mruzek | 6-2,6-1 |
| ITF M25 Trnava | 2023/03/28 08:00 | Stepan Mruzek v Adam Jurajda | 3-6,6-7 |
| ITF M25 Trnava | 2023/03/27 10:30 | Antonin Bolardt v Stepan Mruzek | 6-2,4-6,7-10 |