Stadium: Court 2 Round: 54 Ground: Clay
| ITF M15 Antalya | 2021/11/14 06:30 | Facundo Yunis v Mikolaj Borkowski | 6-1,6-1 |
| ITF M15 Antalya | 2021/11/07 06:30 | Gheorghe Claudiu Schinteie v Mikolaj Borkowski | 6-4,6-2 |
| ITF M15 Lodz | 2021/08/16 08:00 | Harry Wendelken v Mikolaj Borkowski | 6-0,6-3 |
| ITF M15 Lodz | 2021/08/15 08:00 | Svyatoslav Ilnytskyy v Mikolaj Borkowski | 4-6,6-3,5-10 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Mikolaj Borkowski v Piotr Galus | 6-7,1-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 17:05 | Roman Postolka v Mikolaj Borkowski | 6-1,6-0 |
| ITF M25 Wroclaw | 2021/06/27 11:00 | Mikolaj Borkowski v Oleksandr Ovcharenko | 4-6,0-6 |
| ITF M25 Poznan | 2020/08/24 08:00 | Pawel Juszczak v Mikolaj Borkowski | 6-4,6-0 |