Stadium: Court 5 Round: 25 Ground: Hardcourt indoor
| ITF M15 Tallahassee | 2021/10/28 15:50 | John McNally v Vasil Kirkov | 4-6,2-6 |
| ITF M15 Tallahassee | 2021/10/28 15:50 | John McNally v Vasil Kirkov | 4-6,2-6 |
| ITF M15 Tallahassee | 2021/10/27 17:00 | John McNally v Jack Anthrop | 6-7,6-2,6-4 |
| ITF M15 Fayetteville | 2021/09/23 19:45 | John McNally v Pedro Vives Marcos | 6-3,3-6,2-6 |
| ITF M15 Fayetteville | 2021/09/22 14:55 | John McNally v Nicolas Rousset | 7-5,6-4 |
| ITF M15 Champaign | 2021/09/18 15:00 | John McNally v Martin Damm | 7-6,6-7,3-6 |
| ITF M15 Champaign | 2021/09/17 15:00 | John McNally v Omni Kumar | 5-7,6-4,6-2 |
| ITF M15 Champaign | 2021/09/16 15:00 | John McNally v Yasha Zemel | 6-3,7-6 |
| ITF M15 Champaign | 2021/09/15 16:55 | John McNally v Jake Van Emburgh | 6-4,7-6 |
| ITF M15 Tallahassee | 2021/10/31 14:00 | Johannes Ingildsen v Vasil Kirkov | 6-4,1-6,2-6 |
| ITF M15 Tallahassee | 2021/10/30 13:55 | Vasil Kirkov v Henry Patten | 4-6,6-3,6-3 |
| ITF M15 Tallahassee | 2021/10/29 13:55 | Ben Shelton v Vasil Kirkov | 6-7,6-2,3-6 |
| ITF M15 Tallahassee | 2021/10/28 15:50 | John McNally v Vasil Kirkov | 4-6,2-6 |
| ITF M15 Tallahassee | 2021/10/27 18:00 | Liam Draxl v Vasil Kirkov | 3-6,3-6 |
| ITF M25 Praha | 2021/10/07 13:00 | Timo Stodder v Vasil Kirkov | 6-2,6-1 |
| ITF M25 Praha | 2021/10/06 07:55 | Vasil Kirkov v Adam Januska | 6-0,6-0 |
| ITF M25 Falun | 2021/10/01 14:30 | Vasil Kirkov v Shintaro Imai | 2-6,5-7 |