Stadium: Court 1 Round: 28 Ground: Hardcourt indoor
| ITF - M15 Heraklion | 2020/11/26 07:30 | Henry Patten v Vasil Kirkov | 6-4,6-1 |
| 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 Praag | 2021/10/07 13:00 | Timo Stodder v Vasil Kirkov | 6-2,6-1 |
| ITF - M25 Praag | 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 |
| ITF - M25 Falun | 2021/09/30 14:20 | Antoine Escoffier v Vasil Kirkov | 6-3,4-6,4-6 |
| ITF - M25 Falun | 2021/09/29 15:20 | Vasil Kirkov v Leopold Zima | 6-4,6-4 |
| ITF M15 Tallahassee | 2021/10/29 13:55 | Henry Patten v Sho Shimabukuro | 6-4,6-2 |
| ITF M15 Tallahassee | 2021/10/28 14:00 | Bruno Kuzuhara v Henry Patten | 3-6,6-7 |
| ITF M15 Tallahassee | 2021/10/27 20:30 | Matt Kuhar v Henry Patten | 4-6,3-6 |
| ITF M15 Ithaca | 2021/10/10 13:55 | Charles Broom v Henry Patten | 6-7,6-3,6-4 |
| ITF M15 Ithaca | 2021/10/09 15:00 | Henry Patten v Toby Alex Kodat | 6-4,6-4 |
| ITF M15 Ithaca | 2021/10/08 15:00 | Radu Mihai Papoe v Henry Patten | 2-6,2-6 |
| ITF M15 Ithaca | 2021/10/07 14:00 | Henry Patten v Taha Baadi | 4-6,6-3,7-6 |
| ITF M15 Ithaca | 2021/10/06 17:40 | Gabi Adrian Boitan v Henry Patten | 2-6,1-6 |