Stadium: Court 5 Round: 26 Ground: Hardcourt indoor
| ITF M15 Cancun | 2019/12/15 15:00 | Nick Chappell v Vasil Kirkov | 7-6,6-7,6-7 |
| ITF M15 Bratislava | 2021/08/28 08:55 | Mate Valkusz v Vasil Kirkov | 7-5,6-4 |
| ITF M15 Bratislava | 2021/08/27 08:00 | Vasil Kirkov v Biagio Gramaticopolo | 7-5,6-1 |
| ITF M15 Bratislava | 2021/08/26 07:55 | Vasil Kirkov v Simon Freund | 6-0,6-1 |
| ITF M15 Bratislava | 2021/08/24 10:00 | Vasil Kirkov v Diego F Flores | 6-3,6-3 |
| ITF M15 Bratislava | 2021/08/20 08:00 | Vasil Kirkov v Fabian Marozsan | 6-4,1-6,4-6 |
| ITF M15 Bratislava | 2021/08/19 10:25 | Marat Sharipov v Vasil Kirkov | 4-6,6-7 |
| ITF M15 Bratislava | 2021/08/18 09:35 | Vasil Kirkov v Franco Roncadelli | 5-7,6-2,6-2 |
| ITF M15 Frederiksberg | 2021/08/06 10:50 | Markus Eriksson v Vasil Kirkov | 6-4,6-3 |
| Challenger Mallorca | 2021/08/30 08:00 | Joan Nadal v Nick Chappell | 1-6,2-6 |
| Challenger Prague | 2021/08/23 10:00 | Kaichi Uchida v Nick Chappell | 6-4,3-6,6-1 |
| ITF M25 Prostejov | 2021/08/19 08:15 | Alex Rybakov v Nick Chappell | 6-2,7-6 |
| ITF M25 Prostejov | 2021/08/18 10:30 | Daniel Paty v Nick Chappell | 4-6,3-6 |
| ITF M25 Prostejov | 2021/08/17 07:55 | Robert Rumler v Nick Chappell | 0-6,4-6 |
| Challenger Segovia | 2021/07/25 14:00 | Luca Vanni v Nick Chappell | 6-1,6-2 |
| Challenger Nur-Sultan | 2021/07/23 05:00 | Oleksii Krutykh v Nick Chappell | 3-6,6-3,7-5 |
| Challenger Nur-Sultan | 2021/07/21 06:30 | Nick Chappell v Sergiy Stakhovsky | 7-6,6-4 |