| Daily Premier Tour | 2020/04/06 00:50 | Nikita Geraskin v Grigorii Firsin | 6-3,6-3 |
| Daily Premier Tour | 2020/04/02 22:21 | Nikita Geraskin v Grigorii Firsin | 4-6,4-6 |
| Daily Premier Tour | 2020/03/20 09:53 | Edward Riman v Grigorii Firsin | 6-3,6-4 |
| Exhibition | 2020/03/19 22:47 | Grigorii Firsin v Nikita Geraskin | 2-6,4-6 |
| ITF M15 Burgas | 2019/10/07 07:00 | Grigorii Firsin v Doru Junior Borsan | 3-6,0-6 |