Stadium: Court 8 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 - Monastir | 2021/06/01 09:00 | Naoki Nakagawa v Jeremy Beale | 4-6,7-6,4-6 |
| ITF - M15 - Monastir | 2021/05/29 08:30 | Eliakim Coulibaly v Naoki Nakagawa | 6-4,4-6,7-5 |
| ITF - M15 - Monastir | 2021/05/28 09:30 | Naoki Nakagawa v Santiago Rodriguez Taverna | 6-3,6-7,6-1 |
| ITF - M15 - Monastir | 2021/05/27 08:30 | Naoki Nakagawa v Bautista Vilicich | 6-2,6-2 |
| ITF - M15 - Monastir | 2021/05/25 08:30 | David Poljak v Naoki Nakagawa | 6-7,7-6,1-6 |
| ITF M15 - Antalya | 2021/05/19 07:30 | Naoki Nakagawa v Marsel Ilhan | 6-7,4-6 |
| ITF M15 - Antalya | 2021/05/14 07:00 | Nick Hardt v Naoki Nakagawa | 6-2,6-0 |
| ITF M15 - Antalya | 2021/05/13 06:50 | Naoki Nakagawa v Ivan Nedelko | 4-6,7-6,6-3 |
| ITF - M15 - Monastir | 2021/06/01 08:50 | Taisei Ichikawa v Ryota Tanuma | 7-6,6-3 |
| ITF - M15 - Monastir | 2021/03/11 08:30 | Kai Wehnelt v Ryota Tanuma | 6-1,6-4 |
| ITF - M15 - Monastir | 2021/03/10 09:30 | Anis Ghorbel v Ryota Tanuma | 4-6,6-4,0-6 |
| ITF - M15 - Monastir | 2021/03/02 08:30 | Ryota Tanuma v Juan Bautista Torres | 6-3,4-6,2-6 |
| ITF - M15 - Monastir | 2021/02/23 11:10 | Alexander Erler v Ryota Tanuma | 6-4,6-4 |
| ITF - M15 - Monastir | 2021/02/16 08:00 | Ryota Tanuma v Lilian Marmousez | 4-6,2-6 |
| ITF - M15 - Monastir | 2021/02/10 10:45 | Ryota Tanuma v Moez Echargui | 6-7,6-7 |
| ITF - M15 - Monastir | 2021/02/08 09:30 | Ryota Tanuma v Louis Herman | 6-3,6-4 |