Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Los Angeles | 2020/01/06 18:00 | Vasil Kirkov v Lucas Gomez | 6-3,1-6,3-10 |
| ITF M15 Cancun | 2019/12/15 15:00 | Nick Chappell v Vasil Kirkov | 7-6,6-7,6-7 |
| ITF M15 Cancun | 2019/12/13 15:00 | Joshua Ortlip v Vasil Kirkov | 6-2,3-6,1-6 |
| ITF M15 Cancun | 2019/12/12 16:40 | Manuel Barros v Vasil Kirkov | 4-6,2-6 |
| ITF M15 Cancun | 2019/12/10 14:00 | Skyler Butts v Vasil Kirkov | 1-6,4-6 |
| ITF M15 Tallahassee | 2019/12/04 16:40 | Vasil Kirkov v Dennis Novikov | 6-3,4-6,6-7 |
| ITF M15 Heraklion | 2019/11/23 08:00 | Vasil Kirkov v Mick Veldheer | 6-4,5-7,1-6 |
| ITF M15 Heraklion | 2019/11/22 09:30 | Vasil Kirkov v Lenny Hampel | 7-6,4-6,6-3 |
| ITF M25 Rancho Santa Fe | 2020/01/14 19:25 | Alexey Zakharov v Jean Thirouin | 6-4,5-7,3-10 |
| ITF M25 Rancho Santa Fe | 2020/01/13 18:00 | Alexey Zakharov v Grigoriy Lomakin | 6-1,6-2 |
| Challenger Ann Arbor | 2020/01/07 21:50 | Pedro Sakamoto v Alexey Zakharov | 6-2,7-6 |
| Challenger Ann Arbor | 2020/01/06 18:00 | Benjamin Lock v Alexey Zakharov | 3-6,5-7 |
| ITF M15 Sharm El Sheikh | 2019/11/24 08:00 | Lucas Hellfritsch v Alexey Zakharov | 4-6,1-6 |
| ITF M15 Sharm El Sheikh | 2019/11/23 08:00 | Alexey Zakharov v Marek Gengel | 6-3,7-6 |
| ITF M15 Sharm El Sheikh | 2019/11/22 08:00 | Yuichiro Inui v Alexey Zakharov | 3-6,0-6 |
| ITF M15 Sharm El Sheikh | 2019/11/21 08:00 | Maciej Smola v Alexey Zakharov | 2-6,3-6 |