Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2021/10/27 14:20 | Naoki Nakagawa v Anton Matusevich | 2-6,2-6 |
| ITF M25 Quinta Do Lago | 2021/10/24 10:00 | Naoki Nakagawa v Arthur Cazaux | 3-6,4-6 |
| ITF M25 Quinta Do Lago | 2021/10/23 11:05 | Naoki Nakagawa v Kaichi Uchida | 6-3,6-2 |
| ITF M25 Quinta Do Lago | 2021/10/22 09:25 | Roberto Ortega-Olmedo v Naoki Nakagawa | 7-6,3-6,6-7 |
| ITF M25 Quinta Do Lago | 2021/10/21 09:00 | Stuart Parker v Naoki Nakagawa | 1-6,6-7 |
| ITF M25 Quinta Do Lago | 2021/10/19 12:50 | Naoki Nakagawa v Petros Chrysochos | 7-6,6-1 |
| ITF M25 Decatur | 2021/08/02 15:00 | Naoki Nakagawa v Eliot Spizzirri | 6-7,1-6 |
| ITF M25 Champaign | 2021/07/31 16:50 | Gijs Brouwer v Naoki Nakagawa | 6-1,4-6,6-1 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Roi Ginat v Martin Dobry | 3-6,6-3,4-10 |
| ITF M15 Bratislava | 2021/08/18 10:55 | Jan Satral v Roi Ginat | 6-0,6-0 |
| ITF M15 Bratislava | 2021/08/16 08:00 | Martin Dobry v Roi Ginat | 4-6,2-6 |
| ITF M15 Heraklion | 2021/06/07 06:30 | Reese Stalder v Roi Ginat | 6-1,6-3 |
| ITF M15 Jerusalem | 2021/05/12 12:00 | Roi Ginat v Karlo Cubelic | 1-6,3-6 |
| ITF M15 Ramat Hasharon | 2021/05/04 07:00 | Roi Ginat v Alexander Cozbinov | 1-6,3-6 |
| ITF M15 Antalya | 2021/04/25 07:00 | Roi Ginat v Gabriele Maria Noce | 4-6,3-6 |
| ITF M15 Antalya | 2021/04/18 07:00 | Roi Ginat v Stefan Palosi | 1-6,0-6 |