| Califórnia - UTR Pro Tennis Series | 2021/11/08 19:00 | Rithvik Krishna v Dzianis Zharyn | 6-4,1-6,5-2 |
| Califórnia - UTR Pro Tennis Series | 2021/11/07 17:30 | Rithvik Krishna v Ray Lo | 6-7,6-6 |
| Califórnia - UTR Pro Tennis Series | 2021/10/16 21:00 | Rithvik Krishna v Chase Thompson | 4-6,3-5 |
| Califórnia - UTR Pro Tennis Series | 2021/10/15 19:30 | Rithvik Krishna v Julien Evrard | 7-5,4-6,0-6 |
| Califórnia - UTR Pro Tennis Series | 2021/10/13 16:30 | Rithvik Krishna v Karl Lee | 3-6,3-5 |
| Califórnia - UTR Pro Tennis Series | 2021/09/04 18:00 | Isaiah Strode v Rithvik Krishna | 6-2,5-1 |
| Califórnia - UTR Pro Tennis Series | 2021/09/02 16:30 | Maximilian Wild v Rithvik Krishna | 2-6,6-4,1-4 |
| Califórnia - UTR Pro Tennis Series | 2021/09/01 19:30 | Rithvik Krishna v Abraham Asaba | 4-6,6-3,4-5 |
| Califórnia - UTR Pro Tennis Series | 2021/11/08 16:00 | Ray Lo v Alex Kuperstein | 6-2,6-2 |
| Califórnia - UTR Pro Tennis Series | 2021/11/07 19:00 | Alex Kuperstein v Dzianis Zharyn | 7-6,5-2 |
| UTR Pro Tennis Series - Belgrado | 2021/07/10 11:30 | Alex Kuperstein v Jean Thirouin | 4-6,3-6 |
| UTR Pro Tennis Series - Belgrado | 2021/07/09 11:30 | Dusan Milanovic v Alex Kuperstein | 6-2,6-2 |
| UTR Pro Tennis Series - Belgrado | 2021/07/08 12:00 | Aleksei Khomich v Alex Kuperstein | 6-2,6-0 |
| UTR Pro Tennis Series - Belgrado | 2021/07/06 09:00 | Giacomo Revelli v Alex Kuperstein | 6-7,6-4,0-6 |
| UTR Pro Tennis Series - Belgrado | 2021/07/05 10:30 | Alex Kuperstein v Alexander Lazov | 6-4,7-5 |
| Califórnia - UTR Pro Tennis Series | 2021/05/22 15:00 | Eric Hadigian v Alex Kuperstein | 3-6,5-6 |