Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Edwardsville | 2023/07/28 14:30 | Quinn Vandecasteele v Naoki Nakagawa | 6-4,6-1 |
| ITF M25 Edwardsville | 2023/07/28 00:00 | Micah Braswell v Naoki Nakagawa | 4-6,4-6 |
| ITF M25 Edwardsville | 2023/07/26 22:55 | Alexander Petrov v Naoki Nakagawa | 7-6,2-6,3-6 |
| ITF M25 Champaign | 2023/07/22 16:45 | Naoki Nakagawa v Aidan Mchugh | 4-6,4-6 |
| ITF M25 Champaign | 2023/07/21 15:00 | Kenta Miyoshi v Naoki Nakagawa | 2-6,4-6 |
| ITF M25 Champaign | 2023/07/19 14:55 | Karlis Ozolins v Naoki Nakagawa | 3-6,0-6 |
| ITF M25 Pensacola | 2023/05/18 18:55 | Naoki Nakagawa v Sekou Bangoura | 4-6,4-6 |
| ITF M25 Pensacola | 2023/05/17 16:15 | Naoki Nakagawa v Justin Lyons | 6-2,6-3 |
| ITF M25 Edwardsville | 2023/07/28 14:45 | Vito Tonejc v Shunsuke Mitsui | 5-7,2-6 |
| ITF M25 Edwardsville | 2023/07/28 00:00 | Yuki Mochizuki v Vito Tonejc | 7-6,4-6,2-6 |
| ITF M25 Edwardsville | 2023/07/26 23:15 | Vito Tonejc v Axel Nefve | 3-6,7-6,7-5 |
| ITF M25 Champaign | 2023/07/19 16:50 | Noah Schachter v Vito Tonejc | 2-6,6-2,6-4 |
| ITF M15 Celje | 2023/06/30 10:25 | Vito Tonejc v Pawel Juszczak | 3-6,1-6 |
| ITF M15 Celje | 2023/06/29 11:00 | Gal Emersic Potocnik v Vito Tonejc | 6-7,1-6 |
| ITF M15 Celje | 2023/06/28 11:10 | Matthias Ujvary v Vito Tonejc | 4-6,3-6 |
| ITF M25 Skopje | 2023/06/10 08:00 | Sascha Gueymard Wayenburg v Vito Tonejc | 7-6,6-1 |