Stadium: Court 2
| ITF Poland F3 Qual | 2014/06/15 07:30 | Gajewski, Kamil v Piotr Grynkowski | 2-6,5-7 |
| Polish National Tour | 2020/06/21 09:30 | Piotr Grynkowski v Walkow, Szymon | 5-7,6-3,7-6 |
| Polish National Tour | 2020/06/17 07:00 | Piotr Grynkowski v Orlikowski, Aleksander | 7-5,6-1 |
| Trnava, Singles Main, M-ITF-SVK-03A | 2020/02/26 12:50 | Piotr Grynkowski v Satral, Jan | 4-6,2-6 |
| Trnava, Singles Main, M-ITF-SVK-03A | 2020/02/25 09:00 | Mammetgulyyev, Isa v Piotr Grynkowski | 3-6,2-6 |
| Trnava, Singles Main, M-ITF-SVK-03A | 2020/02/24 14:00 | Jiri Barnat v Piotr Grynkowski | 3-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/19 15:40 | Issei Okamura v Piotr Grynkowski | 6-3,7-5 |
| ITF - M15 Sharm El Sheikh | 2020/02/18 09:30 | Piotr Grynkowski v Ghinda, Iancu-Lustinian | 6-2,6-3 |
| ITF - M15 Sharm El Sheikh | 2020/02/17 09:00 | Piotr Grynkowski v Onishi, Ken | 6-1,6-4 |
| Polish National Tour | 2020/06/17 13:00 | Gajewski, Kamil v Daniel Michalski | 3-6,4-6 |
| Polish National Tour | 2020/06/17 08:30 | Gajewski, Kamil v Kos, Maciej | 4-6,6-0,6-2 |
| Marbello Cup Exhibition Series | 2020/06/12 11:40 | Gajewski, Kamil v Mikula, Michal | 2-6,2-6 |
| Marbello Cup Exhibition Series | 2020/06/11 12:30 | Gajewski, Kamil v Galka, Jan | 6-3,6-0 |
| Marbello Cup Exhibition Series | 2020/06/11 08:10 | Gajewski, Kamil v Wojcik, Yann | 6-3,6-2 |
| Marbello Cup Exhibition Series | 2020/06/10 14:30 | Mikula, Michal v Gajewski, Kamil | 6-1,6-2 |
| Marbello Cup Exhibition Series | 2020/06/10 08:20 | Gajewski, Kamil v Kolasinski, Filip | 4-6,2-6 |
| Marbello Cup Exhibition Series | 2020/06/09 15:50 | Wozniak, Michal v Gajewski, Kamil | 6-1,3-6,5-10 |