| UTR Pro Tennis Series California | 2021/09/04 18:00 | Isaiah Strode v Rithvik Krishna | 6-2,5-1 |
| UTR Pro Tennis Series California | 2021/09/02 16:30 | Maximilian Wild v Rithvik Krishna | 2-6,6-4,1-4 |
| UTR Pro Tennis Series California | 2021/09/01 19:30 | Rithvik Krishna v Abraham Asaba | 4-6,6-3,4-5 |
| UTR Pro Tennis Series California | 2021/08/31 15:00 | Rithvik Krishna v Evan Shamlian | 7-5,5-3 |
| UTR Pro Tennis Series California | 2021/08/30 16:30 | Rithvik Krishna v Humberto Lopez | 5-7,0-5 |
| UTR Pro Tennis Series California | 2021/08/25 16:30 | Will Davies v Rithvik Krishna | 6-3,6-1 |
| UTR Pro Tennis Series California | 2021/08/24 23:00 | Tristan Boyer v Rithvik Krishna | 6-2,5-3 |
| UTR Pro Tennis Series California | 2021/08/23 18:00 | Humberto Lopez v Rithvik Krishna | 6-4,6-3 |
| UTR Pro Tennis Series California | 2021/10/11 16:30 | Julien Evrard v Karl Lee | 4-6,4-5 |
| UTR Pro Tennis Series California | 2021/07/20 15:00 | Karl Lee v Julian Steinhausen | 3-6,6-7 |
| UTR Pro Tennis Series California | 2021/07/18 22:47 | Karl Lee v Nevin Arimilli | 5-7,6-7 |
| UTR Pro Tennis Series Nevada | 2021/07/03 16:30 | Bjorn Swenson v Karl Lee | 6-2,5-2 |
| UTR Pro Tennis Series Nevada | 2021/06/30 15:00 | Karl Lee v Aaron Bailey | 6-2,6-4 |
| UTR Pro Tennis Series Nevada | 2021/06/29 15:00 | Karl Lee v Bradley Frye | 3-6,6-7 |
| UTR Pro Tennis Series Nevada | 2021/06/28 18:00 | Karl Lee v Jared Pratt | 6-4,6-3 |
| UTR Pro Tennis Series California | 2021/02/14 16:00 | Kyle Kang v Karl Lee | 7-6,6-3 |