Stadium: Center Court Round: 62 Ground: Hardcourt outdoor
| ITF M25 Pardubice | 2021/09/19 11:00 | Michalis Sakellaridis v Alan F R Fierros | 6-7,6-4,3-10 |
| UTR Pro Tennis Series Ricany | 2021/09/18 10:30 | Stefanos Sakellaridis v Michalis Sakellaridis | 6-2,7-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 07:30 | Dominik Kellovsky v Michalis Sakellaridis | 6-2,6-3 |
| UTR Pro Tennis Series Ricany | 2021/09/12 10:30 | Michalis Sakellaridis v Dominik Langmajer | 6-2,5-2 |
| UTR Pro Tennis Series Ricany | 2021/09/10 07:30 | Michalis Sakellaridis v Andrey Chepelev | 0-6,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/08 12:00 | Michalis Sakellaridis v Lawrence Bataljin | 2-6,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Michalis Sakellaridis v Yanais Laurent | 2-6,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/06 12:00 | Jan Satral v Michalis Sakellaridis | 6-2,6-2 |
| ITF M25 Johannesburg Qual | 2021/09/19 08:10 | Seth Seely v Robbie Arends | 4-6,2-6 |
| ITF M25 Johannesburg | 2021/09/13 09:15 | Sahar Simon v Seth Seely | 6-1,6-2 |
| ITF M25 Johannesburg | 2021/09/12 10:30 | Seth Seely v Roy Hobbs | 3-6,6-4,10-8 |
| ITF M15 Monastir | 2021/06/27 10:30 | Seth Seely v Dylan Salton | 4-6,4-6 |
| ITF M15 Monastir | 2021/06/20 08:00 | Francisco Faigenbaum v Seth Seely | 7-6,7-5 |
| ITF M15 Monastir | 2021/06/13 11:30 | Seth Seely v Guilherme Sousa Severin | 1-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/04/04 07:30 | Emmanuel Luria v Seth Seely | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/28 07:00 | Pawel Juszczak v Seth Seely | 6-1,6-0 |