Stadium: Central Court (8) Round: 25 Ground: Clay
| Polish National Tour | 2020/06/23 10:00 | Piotr Grynkowski v Pawel Juszczak | 5-7,3-6 |
| ITF Poland F4 | 2018/05/22 08:55 | Pawel Juszczak v Piotr Grynkowski | 6-2,6-3 |
| ITF M25 Wroclaw | 2021/06/28 11:00 | Piotr Grynkowski v Maciej Rajski | 6-7,4-6 |
| ITF M25 Wroclaw | 2021/06/27 15:30 | Luca Castelnuovo v Piotr Grynkowski | 6-4,6-7,7-10 |
| ITF M15 Tbilisi | 2021/05/17 06:00 | Piotr Grynkowski v Christian Sigsgaard | 3-6,3-6 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Piotr Grynkowski v David Chelidze | 4-6,6-4,10-7 |
| ITF M15 Cairo | 2021/04/14 12:30 | Francesco Passaro v Piotr Grynkowski | 7-5,6-1 |
| ITF M15 Cairo | 2021/04/13 12:30 | Piotr Grynkowski v Andrea Gola | 6-3,4-6,10-2 |
| ITF M15 Bratislava | 2021/03/09 12:00 | Piotr Grynkowski v Edward Hubner | 2-6,2-6 |
| ITF M15 Bratislava | 2021/03/08 12:00 | Piotr Grynkowski v Tomas Balazi | 6-0,6-1 |
| ITF M25 Denia | 2021/07/28 08:00 | Pawel Juszczak v Alvaro Lopez San Martin | 6-7,6-7 |
| ITF M25 Denia | 2021/07/27 10:00 | Pawel Juszczak v Gianni Ross | 3-6,6-0,10-4 |
| ITF M25 Denia | 2021/07/26 16:00 | Pawel Juszczak v Yeray A. Pastor | 6-4,6-2 |
| ITF M25 Denia | 2021/07/25 14:30 | Pawel Juszczak v Mikel Aranzabal | 6-0,6-0 |
| ITF M25 Gandia | 2021/07/22 10:10 | Javier Barranco Cosano v Pawel Juszczak | 6-1,6-4 |
| ITF M25 Gandia | 2021/07/21 07:30 | Pawel Juszczak v Carles Hernandez | 7-6,6-2 |
| Polish National Tour | 2021/07/13 09:15 | Maks Kasnikowski v Pawel Juszczak | 7-6,7-6 |
| ITF M25 Wroclaw | 2021/06/27 12:30 | Milos Karol v Pawel Juszczak | 6-7,6-3,10-8 |