Stadium: Court 7 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2021/11/28 14:00 | Masamichi Imamura v Pedro Gabriel Rodrigues | 6-0,6-4 |
| ITF M15 Cancun | 2021/11/25 16:55 | Makoto Ochi v Masamichi Imamura | 7-5,6-2 |
| ITF M15 Cancun | 2021/11/23 16:10 | Masamichi Imamura v Austin Ansari | 6-1,6-4 |
| ITF M15 Monastir | 2021/09/10 09:45 | Masamichi Imamura v Christian Sigsgaard | 3-6,6-3,3-6 |
| ITF M15 Monastir | 2021/09/09 08:00 | Takuto Niki v Masamichi Imamura | 2-6,3-6 |
| ITF M15 Monastir | 2021/09/08 08:00 | Masamichi Imamura v Taisei Ichikawa | 6-3,6-1 |
| ITF M15 Monastir | 2021/09/07 08:00 | Evgeny Philippov v Masamichi Imamura | 6-3,1-6,9-11 |
| ITF M15 Monastir | 2021/09/06 11:00 | Alex Knaff v Masamichi Imamura | 6-2,3-6,3-10 |
| 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 Monastir | 2021/06/07 12:30 | Ko Suzuki v Ren Nakamura | 6-4,6-1 |