Stadium: Center Court Round: 27 Ground: Hardcourt outdoor
| Challenger Lugano | 2021/03/26 15:15 | Roman Safiullin v Vitaliy Sachko | 4-6,3-6 |
| Challenger Lugano | 2021/03/25 15:35 | Roman Safiullin v Jack Sock | 6-4,6-3 |
| Challenger Lugano | 2021/03/23 13:10 | Roman Safiullin v Jerome Kym | 6-4,6-2 |
| Challenger St. Petersburg | 2021/03/09 08:40 | Roman Safiullin v Mirza Basic | 4-6,6-7 |
| Challenger St. Petersburg | 2021/03/02 12:50 | Roman Safiullin v Evgeny Tyurnev | 5-7,4-6 |
| Australian Open | 2021/02/11 07:10 | Cameron Norrie v Roman Safiullin | 3-6,7-5,6-3,7-6 |
| Australian Open | 2021/02/09 08:10 | Ilya Ivashka v Roman Safiullin | 4-6,3-6,4-6 |
| ATP Great Ocean Road Open | 2021/02/02 07:40 | Roman Safiullin v Sergiy Stakhovsky | 7-6,4-6,3-6 |
| Challenger Nur-Sultan | 2021/03/04 05:00 | Soonwoo Kwon v Peter Polansky | 7-6,6-4 |
| Challenger Nur-Sultan | 2021/02/23 10:10 | Peter Polansky v Maximilian Marterer | 3-6,4-6 |
| Challenger Potchefstroom | 2021/02/16 08:00 | Ulises Blanch v Peter Polansky | 7-6,6-3 |
| Challenger Potchefstroom | 2021/02/12 09:00 | Peter Polansky v Nick Chappell | 4-6,7-6,4-6 |
| Challenger Potchefstroom | 2021/02/10 08:00 | Peter Polansky v Tristan Lamasine | 6-4,6-4 |
| Challenger Potchefstroom | 2021/02/08 10:50 | Peter Polansky v Viktor Galovic | 6-2,3-6,7-6 |
| Australian Open | 2021/01/12 15:00 | Peter Polansky v Alexandre Muller | 0-6,1-6 |
| Australian Open | 2021/01/11 14:00 | Rudolf Molleker v Peter Polansky | 7-6,5-7,3-6 |