| Marbello Cup Exhibition Series | 2020/06/03 14:40 | Maciej Rajski v Zielinski, Jan | 4-6,4-6 |
| ITF Poland F6 | 2018/08/11 10:00 | Zielinski, Jan v Maciej Rajski | 5-7,1-6 |
| ITF Poland F4 | 2015/09/03 10:30 | Zielinski, Jan v Maciej Rajski | 4-6,6-4,2-6 |
| Marbello Cup Exhibition Series | 2020/06/04 07:00 | Daniel Michalski v Maciej Rajski | 7-5,6-2 |
| 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 11:20 | Maciej Rajski v Kolasinski, Filip | 4-6,7-5,3-10 |
| Marbello Cup Exhibition Series | 2020/06/02 15:15 | Maciej Rajski v Terczynski, Mateusz | 4-6,6-4,10-4 |
| Marbello Cup Exhibition Series | 2020/06/02 11:15 | Maciej Rajski v Dembek, Michal | 6-3,3-6,17-15 |
| ITF - M15 Héraklion | 2020/02/16 09:15 | Urbanija, Mike v Maciej Rajski | 6-4,6-2 |
| ITF - M15 Héraklion | 2020/02/11 08:00 | Maciej Rajski v Lodewijk Weststrate | 4-6,2-6 |
| ITF - M15 Héraklion | 2020/02/10 08:30 | Maciej Rajski v Zocastello, Marco | 6-2,4-6,10-5 |
| 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 |
| ITF M25 Glasgow | 2020/02/19 10:00 | Zielinski, Jan v Antoine Bellier | 4-6,4-6 |