Stadium: Court 4 Round: 25 Ground: Hardcourt indoor
| ITF M25 Johannesburg | 2021/09/24 09:45 | Kyle Seelig v Benjamin Lock | 6-7,5-7 |
| ITF M25 Johannesburg | 2021/09/23 07:00 | Igor Marcondes v Kyle Seelig | 6-1,6-7,1-6 |
| ITF M25 Johannesburg | 2021/09/22 10:05 | Peter Goldsteiner v Kyle Seelig | 0-6,6-2,2-6 |
| ITF M25 Johannesburg | 2021/09/14 07:50 | Kyle Seelig v Filip Peliwo | 3-6,4-6 |
| ITF M15 Monastir | 2021/09/05 08:30 | Kyle Seelig v Renta Tokuda | 5-7,0-6 |
| ITF M15 Monastir | 2021/09/04 08:30 | Li Tu v Kyle Seelig | 5-7,2-6 |
| ITF M15 Monastir | 2021/09/03 08:00 | Kyle Seelig v Dane Sweeny | 6-4,6-4 |
| ITF M15 Monastir | 2021/09/02 08:00 | Gage Brymer v Kyle Seelig | 4-6,0-6 |
| ITF M15 Ithaca | 2021/10/05 13:00 | Petro Orlando Fellin v Ishaan Ravichander | 1-6,6-4,10-4 |
| ITF M25 Caslano | 2021/08/25 08:30 | Leandro Riedi v Petro Orlando Fellin | 7-6,6-2 |
| ITF M25 Caslano | 2021/08/24 07:25 | Joao Riquelme v Petro Orlando Fellin | 4-6,1-6 |
| ITF M25 Caslano | 2021/08/23 09:30 | Gabriele Datei v Petro Orlando Fellin | 1-6,7-6,2-10 |
| ITF M25 Ueberlingen | 2021/08/17 09:20 | Petro Orlando Fellin v Florian Broska | 6-4,1-6,8-10 |
| ITF M15 Parnu | 2021/08/04 12:30 | Michal Mikula v Petro Orlando Fellin | 6-2,6-0 |
| ITF M15 Parnu | 2021/08/03 07:00 | Christoffer Solberg v Petro Orlando Fellin | 3-6,4-6 |
| ITF M15 Parnu | 2021/08/02 09:30 | Oskar Antinheimo v Petro Orlando Fellin | 5-7,3-6 |