| UTR Pro - Kalifornien | 2023/12/20 00:31 | Markos Kalovelonis v Will Peters | 3-6,6-1,6-4 |
| Challenger - Maspalomas | 2023/11/26 12:30 | Markos Kalovelonis v Imanol L Morillo | 4-6,7-6,3-6 |
| ITF - M25 - Heraklion | 2023/11/09 09:30 | Markos Kalovelonis v Francesco Forti | 3-6,4-6 |
| ITF - M25 - Heraklion | 2023/11/08 13:40 | Markos Kalovelonis v Christos Antonopoulos | 6-2,7-6 |
| Challenger - Shenzhen - Qualifikation | 2023/10/15 05:50 | Ye Cong Mo v Markos Kalovelonis | 6-2,6-2 |
| Challenger - Guangzhou | 2023/09/10 03:55 | Bang Shuo Yin v Markos Kalovelonis | 6-2,6-3 |
| Challenger - Shanghai | 2023/09/03 04:20 | Markos Kalovelonis v Hanwen Li | 6-3,3-6,1-6 |
| Challenger - Zhangjiagang | 2023/08/27 07:10 | Colin Sinclair v Markos Kalovelonis | 6-4,6-1 |
| UTR Pro - Kalifornien | 2023/12/20 01:23 | Spencer Johnson v Boris Kozlov | 4-6,2-6 |
| UTR Pro - Kalifornien | 2023/12/19 16:00 | Dominique Rolland v Boris Kozlov | 3-6,0-6 |
| UTR Pro - Kalifornien | 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 |