Stadium: Court 11 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/06/14 12:00 | Ji Hoon Son v Emil Reinberg | 6-2,6-2 |
| ITF M15 Monastir | 2021/06/14 08:00 | Emil Reinberg v Masamichi Imamura | 6-4,0-6,11-9 |
| ITF M15 Monastir | 2021/06/13 10:00 | Shohei Chikami v Emil Reinberg | 3-6,5-7 |
| ITF M15 Monastir | 2021/06/08 08:30 | Emil Reinberg v Seong Chan Hong | 1-6,2-6 |
| ITF M15 Monastir | 2021/06/03 08:25 | Emil Reinberg v Alejo Lorenzo Lingua Lavallen | 1-6,3-6 |
| ITF M15 Monastir | 2021/06/02 12:15 | Emil Reinberg v Guy Orly Iradukunda | 6-4,7-5 |
| ITF M15 Monastir | 2021/05/31 14:30 | Emil Reinberg v Victorio Marquiselli | 6-2,6-3 |
| ITF M15 Monastir | 2021/05/31 09:00 | Seita Watanabe v Emil Reinberg | 6-7,5-7 |
| ITF M25 Champaign | 2021/09/14 17:00 | Perry Gregg v Osgar O'Hoisin | 6-2,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/08/08 08:30 | Olexiy Kolisnyk v Osgar O'Hoisin | 7-6,3-6,5-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 11:00 | Osgar O'Hoisin v Francois Musitelli | 2-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 10:00 | Osgar O'Hoisin v Nicolas Bianchi | 4-6,6-0,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/04 08:30 | Osgar O'Hoisin v Kuzey Cekirge | 3-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 07:00 | Osgar O'Hoisin v Xavier Gabarro | 6-3,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 11:30 | Pol Fernandez v Osgar O'Hoisin | 6-7,7-6,1-6 |
| ITF M15 Castelo Branco | 2021/07/26 11:00 | Sahar Simon v Osgar O'Hoisin | 4-6,6-4,10-6 |