Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| 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 M15 Bratislava | 2021/03/03 16:55 | Piotr Grynkowski v Daniel Siniakov | 3-6,6-3,1-6 |
| ITF M15 Bratislava | 2021/03/02 09:00 | Piotr Grynkowski v Mate Voros | 6-2,6-3 |
| ITF M15 Bratislava | 2021/03/01 12:00 | Piotr Grynkowski v Jakub Katuch | 6-3,6-1 |
| ITF M15 Cairo | 2021/01/10 07:00 | Piotr Grynkowski v Francesco Passaro | 5-7,1-6 |
| ITF M15 Antalya Qual | 2019/12/08 07:00 | David Chelidze v Anze Arh | 1-6,1-6 |
| ITF M15 Antalya | 2019/12/01 07:00 | Osmancan Soyler v David Chelidze | 6-1,6-4 |
| ITF M15 Antalya | 2019/11/24 07:00 | David Chelidze v Bozo Barun | 2-6,1-6 |
| ITF M15 Telavi | 2019/07/29 11:00 | Leonid Sheyngezikht v David Chelidze | 6-2,6-0 |
| ITF M15 Telavi | 2019/07/29 08:00 | David Chelidze v Ivan Mikhaylyuk | 6-3,3-6,10-5 |
| ITF M15 Telavi | 2019/07/24 06:00 | David Chelidze v Dennis Uspensky | 3-6,0-6 |
| ITF M15 Telavi | 2019/07/15 06:00 | David Chelidze v Denis Parshutin | 1-6,1-6 |
| ITF M15 Tbilisi | 2019/04/29 09:10 | David Chelidze v Victor Gurevich | 4-6,2-6 |