Stadium: Estadio Lorenzo Molina Round: 14 Ground: Clay
| UTR Pro California | 2023/12/23 20:40 | Boris Kozlov v Samuel Sippel | 2-6,3-5 |
| UTR Pro California | 2023/12/23 16:00 | Ryan Seggerman v Boris Kozlov | 6-7,1-6 |
| UTR Pro California | 2023/12/23 01:10 | Markos Kalovelonis v Boris Kozlov | 1-6,2-6 |
| UTR Pro California | 2023/12/20 01:23 | Spencer Johnson v Boris Kozlov | 4-6,2-6 |
| 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 |