Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2021/11/29 14:00 | Masamichi Imamura v Ren Nakamura | 2-6,4-6 |
| ITF M15 Cancun | 2021/11/28 14:00 | Juan Sebastian Osorio v Ren Nakamura | 6-3,3-6,9-11 |
| ITF M25 Afula | 2021/11/09 12:50 | Rio Noguchi v Ren Nakamura | 7-6,6-2 |
| ITF M25 Meitar | 2021/11/02 14:30 | Yshai Oliel v Ren Nakamura | 6-4,6-2 |
| ITF M15 Monastir | 2021/08/23 08:00 | Ren Nakamura v Rishi Reddy | 4-6,1-6 |
| ITF M15 Monastir | 2021/08/22 09:00 | Ren Nakamura v Dheeraj Kodancha Srinivasan | 6-4,7-5 |
| ITF M15 Monastir | 2021/08/15 11:00 | Matthew Dellavedova v Ren Nakamura | 6-1,6-4 |
| ITF M15 Monastir | 2021/08/08 08:30 | Ren Nakamura v Adil Kalyanpur | 1-6,2-6 |
| ITF M15 Cancun | 2021/11/29 14:00 | Gal Emersic Potocnik v Joshua Sheehy | 4-6,6-7 |
| ITF M15 Cancun | 2021/11/28 14:00 | Tom Dynka v Joshua Sheehy | 2-6,2-6 |
| ITF M15 Cancun | 2021/11/23 14:00 | Matic Spec v Joshua Sheehy | 6-3,6-2 |
| ITF M15 Cancun | 2021/11/23 14:00 | Joshua Sheehy v Luciano Doria | 3-6,6-4,7-10 |
| ITF M15 East Lansing | 2021/11/16 16:00 | Joshua Sheehy v Alex Knaff | 3-6,2-6 |
| ITF M25 Calabasas | 2021/10/27 17:00 | Felix Corwin v Joshua Sheehy | 1-6,6-0,6-2 |
| ITF M25 Calabasas | 2021/10/26 20:00 | Joshua Sheehy v Miles Jones | 6-3,6-3 |
| ITF M15 Ithaca | 2021/10/05 13:00 | Joshua Sheehy v Sebastian Dominko | 4-6,6-7 |