| Daily Premier Tour | 2020/06/07 02:26 | Firsin, Grigorii v Kolyshkov, Gleb | 3-6,6-3,5-6 |
| Daily Premier Tour | 2020/06/02 00:00 | 라스카, 아네이 v Firsin, Grigorii | 6-3,6-4 |
| Daily Premier Tour | 2020/06/01 02:45 | Firsin, Grigorii v Budov, Daniil | 6-3,6-3 |
| Daily Premier Tour | 2020/05/30 02:26 | Firsin, Grigorii v Budov, Daniil | 6-7,5-7 |
| Daily Premier Tour | 2020/05/23 23:36 | Bandaryk, Anton v Firsin, Grigorii | 6-3,7-6 |
| Daily Premier Tour | 2020/05/23 14:26 | Firsin, Grigorii v Artur Martinkevich | 6-3,6-2 |
| Daily Pro Tour | 2020/05/19 10:23 | Pavel Leonchik v Firsin, Grigorii | 6-2,6-3 |
| Daily Premier Tour | 2020/05/19 02:30 | Gumenyuk, Roman v Firsin, Grigorii | 7-5,6-3 |