| UTR Pro California | 2023/12/19 16:00 | Spencer Johnson v Aguilar, Juan Carlos | 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 로페즈, 루이스 훔버토 | 4-6,6-4,3-6 |
| UTR Pro Tennis Series California | 2021/07/20 16:30 | Spencer Johnson v 반데카스틸, 퀸 | 2-6,6-7 |
| UTR Pro Tennis Series California | 2021/07/19 18:00 | Spencer Johnson v 한, 나단 | 5-7,6-1,6-5 |
| UTR Pro Tennis Series California | 2021/07/18 18:45 | Spencer Johnson v Rubell, Samuel | 6-3,6-7,6-6 |
| UTR Pro Tennis Series California | 2021/05/30 15:00 | Spencer Johnson v Bailey, Aaron | 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 Kozlov, Boris | 3-6,0-6 |
| UTR Pro California | 2023/12/18 17:30 | Kozlov, Boris v Aguilar, Juan Carlos | 2-6,3-6 |
| UTR Pro Florida | 2023/12/15 13:00 | 시드 수베르비, 로베르토 v Kozlov, Boris | 6-0,3-6,6-1 |
| UTR Pro Florida | 2023/12/12 17:00 | Burdet, Adrien v Kozlov, Boris | 1-6,7-6,6-0 |
| UTR Pro Florida | 2023/12/11 15:30 | John Chin v Kozlov, Boris | 5-7,3-6 |
| UTR Pro Tennis Series Florida | 2022/10/18 20:12 | Kozlov, Boris v Yannik Rahman | 1-6,2-6 |
| UTR Pro Tennis Series Florida | 2022/10/17 16:30 | Rudy Quan v Kozlov, Boris | 4-6,6-3,6-3 |
| ITF USA F32 | 2018/11/15 20:50 | Kozlov, Boris v 그라시 마주치, 주안 파블로 | 6-7,4-6 |