Stadium: Center Court Round: 25 Ground: Clay
| ITF M25 Bielsko-Biała | 2023/08/14 16:15 | Mikolaj Lis v Norbert Marosik | 6-2,7-6 |
| ITF M25 Bielsko-Biała | 2023/08/14 10:30 | Mikolaj Lis v Martins Rocens | 6-7,6-4,11-9 |
| ITF M25 Łódź | 2023/08/07 13:30 | Maciej Matuszczyk v Mikolaj Lis | 6-1,7-6 |
| ITF M25 Łódź | 2023/08/07 07:30 | Edoardo Cherie Ligniere v Mikolaj Lis | 1-6,3-6 |
| ITF M15 Wrocław | 2023/06/26 09:00 | Mikolaj Lis v Marc Antoine Gaillard | 3-6,1-6 |
| ITF M15 Nyíregyháza | 2023/06/05 09:30 | Petro Orlando Fellin v Mikolaj Lis | 6-3,6-0 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 13:00 | Mikolaj Lis v Jonas P Hartenstein | 1-6,2-6 |
| ITF M15 Tbilisi | 2023/05/02 07:50 | Mikolaj Lis v Kirill Kivattsev | 4-6,4-6 |
| ITF M25 Bielsko-Biała | 2023/08/14 12:00 | Mateusz Terczynski v Stephanos Schinas | 5-7,2-6 |
| ITF M25 Bielsko-Biała | 2023/08/14 07:30 | Andy Allen v Stephanos Schinas | 1-6,3-6 |
| ITF M25 Łódź | 2023/08/08 07:30 | Matyas Cerny v Stephanos Schinas | 6-2,6-0 |
| ITF M25 Łódź | 2023/08/07 10:30 | Daniil Piatrouski v Stephanos Schinas | 7-5,6-7,11-13 |
| ITF M15 Novi Sad | 2023/07/31 11:00 | Stephanos Schinas v Niksa Arsic | 1-6,3-6 |
| ITF M15 Novi Sad | 2023/07/30 06:30 | Erik Arutiunian v Stephanos Schinas | 5-7,4-6 |
| ITF M15 Novi Sad | 2023/07/23 07:00 | Lorenzo Gagliardo v Stephanos Schinas | 6-2,6-1 |
| ITF M15 Sofia | 2023/07/03 08:00 | Sean Hess v Stephanos Schinas | 6-1,4-6,10-6 |