Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Nyiregyhaza | 2023/06/04 12:00 | Petro Orlando Fellin v Oliver Varga-Toth | 6-3,6-1 |
| UTR Pro Tennis Series California | 2022/11/20 18:00 | Petro Orlando Fellin v Yassine Smiej | 1-6,7-6,1-6 |
| UTR Pro Tennis Series California | 2022/11/18 18:00 | Alessandro-D Ventre v Petro Orlando Fellin | 6-1,5-0 |
| UTR Pro Tennis Series California | 2022/11/18 00:00 | Jan Silva v Petro Orlando Fellin | 6-7,7-5,3-6 |
| UTR Pro Tennis Series California | 2022/11/15 19:30 | Alex Fuchs v Petro Orlando Fellin | 6-7,4-5 |
| UTR Pro Tennis Series California | 2022/11/14 22:30 | Petro Orlando Fellin v Luis Humberto Lopez | 6-7,3-6 |
| ITF M25 Calabasas | 2022/03/21 17:00 | Petro Orlando Fellin v Daniel De Jonge | 3-6,5-7 |
| ITF M25 Austin | 2021/11/16 17:00 | Kareem Allaf v Petro Orlando Fellin | 6-4,6-2 |
| 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 |
| ITF M15 Oberhaching | 2023/02/12 09:00 | Max Wiskandt v Mikolaj Lis | 6-2,6-2 |
| ITF M25 Nussloch | 2023/01/22 08:30 | Yvo Panak v Mikolaj Lis | 6-7,6-4,12-10 |
| ITF M15 Vilnius | 2023/01/16 09:30 | Alexandros Skorilas v Mikolaj Lis | 6-4,7-6 |