Stadium: Court 13 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Ramat Hasharon | 2021/05/06 10:30 | Marat Deviatiarov v Lior Goldenberg | 6-3,6-2 |
| ITF M15 Ramat Hasharon | 2021/05/05 09:10 | Marat Deviatiarov v Roee Benya | 7-6,6-0 |
| ITF M15 St Petersburg | 2021/04/15 07:00 | Naoki Tajima v Marat Deviatiarov | 7-6,6-3 |
| ITF M15 St Petersburg | 2021/04/14 07:00 | Maxim Ratniuk v Marat Deviatiarov | 7-6,6-7,6-7 |
| ITF M15 Sharm El Sheikh | 2021/03/31 09:50 | Marat Deviatiarov v Alessandro Bega | 0-6,3-6 |
| ITF M15 Sharm El Sheikh | 2021/03/25 07:30 | Marat Deviatiarov v Makoto Ochi | 6-7,3-6 |
| ITF M15 Sharm El Sheikh | 2021/03/24 07:30 | Marat Deviatiarov v Babji Siva Atturu | 6-2,6-0 |
| ITF M15 Sharm El Sheikh | 2021/03/17 07:30 | Marat Deviatiarov v Petros Chrysochos | 3-6,2-6 |
| ITF M15 Ramat Hasharon | 2021/05/06 08:30 | Filip Bergevi v Felix Corwin | 2-6,2-6 |
| ITF M15 Ramat Hasharon | 2021/05/05 07:30 | Dylan Salton v Felix Corwin | 0-6,5-7 |
| Challenger Salinas | 2021/04/18 15:00 | Gonzalo Villanueva v Felix Corwin | 6-7,6-4,7-5 |
| UTR Pro Tennis Series Cancun | 2021/04/04 13:00 | Felix Corwin v Wilson Leite | 6-3,4-6,6-3 |
| UTR Pro Tennis Series Cancun | 2021/04/03 13:00 | Felix Corwin v Gabriel Evans | 6-3,5-2 |
| UTR Pro Tennis Series Cancun | 2021/04/02 13:00 | Felix Corwin v Jorge Panta | 3-6,6-2,1-6 |
| UTR Pro Tennis Series Cancun | 2021/03/31 17:00 | Felix Corwin v Mateo Gomez | 6-3,5-1 |
| UTR Pro Tennis Series Cancun | 2021/03/30 15:00 | Felix Corwin v Drew Van Orderlain | 6-2,6-1 |