| UTR Pro Tennis Series Brasov | 2021/10/28 11:30 | Roman Boychuk v Ioan Alexandru Chirita | 4-6,2-5 |
| UTR Pro Tennis Series Brasov | 2021/10/27 07:00 | Vasile Antonescu v Roman Boychuk | 6-4,5-0 |
| UTR Pro Tennis Series Brasov | 2021/10/26 08:30 | Edris Fetisleam v Roman Boychuk | 3-6,7-6,6-4 |
| ITF - M15 Čornomorsk | 2021/09/02 07:00 | Julius Tverijonas v Roman Boychuk | 6-2,6-2 |
| ITF - M15 Čornomorsk | 2021/09/01 07:00 | Roman Boychuk v Georgii Kravchenko | 6-3,6-0 |
| ITF - M15 Čornomorsk | 2021/08/30 10:30 | Roman Boychuk v Vasil Yehorov | 6-2,6-1 |
| ITF - M15 Čornomorsk | 2021/08/30 07:00 | Anatoliy Petrenko v Roman Boychuk | 2-6,2-6 |
| ITF - M15 Novomoskovsk | 2021/05/31 06:15 | Vasil Yehorov v Roman Boychuk | 3-6,1-6 |