| UTR Pro California | 2023/12/19 16:00 | Spencer Johnson v Juan Carlos Aguilar | 2-6,5-7 |
| UTR Pro California | 2023/12/18 17:30 | Spencer Johnson v Dominique Rolland | 6-2,6-7,4-6 |
| UTR Pro Tennis Series California | 2021/07/22 15:00 | Spencer Johnson v Luis Humberto Lopez | 4-6,6-4,3-6 |
| UTR Pro Tennis Series California | 2021/07/20 16:30 | Spencer Johnson v Quinn Vandecasteele | 2-6,6-7 |
| UTR Pro Tennis Series California | 2021/07/19 18:00 | Spencer Johnson v Nathan Han | 5-7,6-1,6-5 |
| UTR Pro Tennis Series California | 2021/07/18 18:45 | Spencer Johnson v Samuel Rubell | 6-3,6-7,6-6 |
| UTR Pro Tennis Series California | 2021/05/30 15:00 | Spencer Johnson v Aaron Bailey | 6-0,5-4 |
| UTR Pro Tennis Series California | 2021/05/29 15:00 | Sema Pankin v Spencer Johnson | 6-2,5-7,5-6 |
| UTR Pro California | 2023/12/19 16:00 | Dominique Rolland v Boris Kozlov | 3-6,0-6 |
| UTR Pro California | 2023/12/18 17:30 | Boris Kozlov v Juan Carlos Aguilar | 2-6,3-6 |
| UTR Pro Florida | 2023/12/15 13:00 | Roberto Cid Subervi v Boris Kozlov | 6-0,3-6,6-1 |
| UTR Pro Florida | 2023/12/12 17:00 | Adrien Burdet v Boris Kozlov | 1-6,7-6,6-0 |
| UTR Pro Florida | 2023/12/11 15:30 | John Chin v Boris Kozlov | 5-7,3-6 |
| UTR Pro Tennis Series Florida | 2022/10/18 20:12 | Boris Kozlov v Yannik Rahman | 1-6,2-6 |
| UTR Pro Tennis Series Florida | 2022/10/17 16:30 | Rudy Quan v Boris Kozlov | 4-6,6-3,6-3 |
| ITF USA F32 | 2018/11/15 20:50 | Boris Kozlov v Juan P G Mazzuchi | 6-7,4-6 |