| UTR Pro Tennis Series California | 2021/02/19 17:30 | Luis Humberto Lopez v Spencer Johnson | 0-6,3-6 |
| UTR Pro Tennis Series California | 2021/02/25 16:00 | Joshua Sheehy v Spencer Johnson | 6-2,5-3 |
| UTR Pro Tennis Series California | 2021/02/23 22:00 | Mousheg Hovhannisyan v Spencer Johnson | 6-2,5-4 |
| UTR Pro Tennis Series California | 2021/02/22 20:00 | Spencer Johnson v Nicolas Barrientos | 3-6,2-6 |
| UTR Pro Tennis Series California | 2021/02/21 16:00 | Keenan Mayo v Spencer Johnson | 2-6,6-3,6-4 |
| UTR Pro Tennis Series California | 2021/02/20 19:00 | Spencer Johnson v Joshua Sheehy | 6-3,6-3 |
| UTR Pro Tennis Series California | 2021/02/19 17:30 | Luis Humberto Lopez v Spencer Johnson | 0-6,3-6 |
| UTR Pro Tennis Series California | 2021/02/18 20:30 | Colton Smith v Spencer Johnson | 6-4,6-6 |
| UTR Pro Tennis Series California | 2021/02/13 19:00 | Kyle Kang v Spencer Johnson | 6-4,6-4 |
| UTR Pro Tennis Series California | 2021/05/22 16:30 | Luis Humberto Lopez v Jackson Allen | 3-6,2-6 |
| UTR Pro Tennis Series California | 2021/05/20 19:30 | Luis Humberto Lopez v Jakob Schnaitter | 4-6,7-5,5-2 |
| UTR Pro Tennis Series California | 2021/05/19 21:30 | Luis Humberto Lopez v Paul Barretto | 5-7,7-5,3-1 |
| UTR Pro Tennis Series California | 2021/05/18 18:00 | Luis Humberto Lopez v Kyle Kang | 7-5,1-6,3-6 |
| UTR Pro Tennis Series California | 2021/05/17 15:00 | Luis Humberto Lopez v Isaiah Strode | 4-6,2-6 |
| UTR Pro Tennis Series California | 2021/02/21 18:00 | Luis Humberto Lopez v Kalman Boyd | 4-6,5-6 |
| UTR Pro Tennis Series California | 2021/02/20 17:30 | Luis Humberto Lopez v Alex Michelsen | 4-6,7-5,6-2 |
| UTR Pro Tennis Series California | 2021/02/19 17:30 | Luis Humberto Lopez v Spencer Johnson | 0-6,3-6 |