Stadium: Court 5 Round: 62 Ground: Clay
| ITF M25 Lodz | 2023/08/07 07:30 | Maciej Matuszczyk v Mateusz Kulakowski | 3-6,6-3,10-7 |
| ITF M25 Lodz | 2023/08/07 07:30 | Edoardo Cherie Ligniere v Mikolaj Lis | 1-6,3-6 |
| ITF M15 Wroclaw | 2023/06/26 09:00 | Mikolaj Lis v Marc Antoine Gaillard | 3-6,1-6 |
| ITF M15 Nyiregyhaza | 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 Tbilisi | 2023/05/01 06:00 | Maksim Shin v Mikolaj Lis | 5-7,6-1,8-10 |
| ITF M25 Trnava | 2023/03/29 13:55 | Mikolaj Lis v Jakub Mensik | 3-6,2-6 |
| ITF M25 Trnava | 2023/03/28 08:00 | Daniel Siniakov v Mikolaj Lis | 4-6,6-2,8-10 |