| Marbello Cup Exhibition Series | 2020/06/04 08:20 | Kolasinski, Filip v Zielinski, Jan | 6-7,4-6 |
| Marbello Cup Exhibition Series | 2020/06/04 12:30 | Kolasinski, Filip v Daniel Michalski | 2-6,2-6 |
| Marbello Cup Exhibition Series | 2020/06/04 08:20 | Kolasinski, Filip v Zielinski, Jan | 6-7,4-6 |
| Marbello Cup Exhibition Series | 2020/06/03 16:10 | Terczynski, Mateusz v Kolasinski, Filip | 2-6,6-7 |
| Marbello Cup Exhibition Series | 2020/06/03 11:20 | Maciej Rajski v Kolasinski, Filip | 4-6,7-5,3-10 |
| Marbello Cup Exhibition Series | 2020/06/02 17:15 | Dembek, Michal v Kolasinski, Filip | 4-6,6-2,10-7 |
| Marbello Cup Exhibition Series | 2020/06/02 09:10 | Daniel Michalski v Kolasinski, Filip | 2-6,6-7 |
| Challenger Szczecin | 2019/09/11 11:30 | Kolasinski, Filip v Arguello, Facundo | 4-6,6-7 |
| Challenger Szczecin | 2019/09/10 16:15 | Kolasinski, Filip v Louis Wessels | 6-3,7-5 |
| Marbello Cup Exhibition Series | 2020/06/04 14:10 | Maciej Rajski v Zielinski, Jan | 7-5,6-1 |
| Marbello Cup Exhibition Series | 2020/06/04 08:20 | Kolasinski, Filip v Zielinski, Jan | 6-7,4-6 |
| Marbello Cup Exhibition Series | 2020/06/03 14:40 | Maciej Rajski v Zielinski, Jan | 4-6,4-6 |
| Marbello Cup Exhibition Series | 2020/06/03 08:50 | Zielinski, Jan v Dembek, Michal | 7-6,5-7,10-4 |
| Marbello Cup Exhibition Series | 2020/06/02 13:30 | Daniel Michalski v Zielinski, Jan | 6-0,5-7,8-10 |
| Marbello Cup Exhibition Series | 2020/06/02 07:00 | Zielinski, Jan v Terczynski, Mateusz | 4-6,6-3,10-6 |
| ITF - M25 Sunderland | 2020/02/24 11:40 | Zielinski, Jan v George Houghton | 4-6,6-3,7-10 |
| ITF - M25 Sunderland | 2020/02/23 13:05 | Zielinski, Jan v Meehan, Harry David | 4-6,6-4,11-9 |