Estadio: Court 9 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/04 03:35 | Ryusuke Horiuchi v Seiya Nakanishi | 6-4,2-6,10-12 |
| ITF M25 Sapporo | 2023/09/03 03:00 | Ryusuke Horiuchi v Kenta Nakamura | 6-3,6-1 |
| ITF M25 Bolzano | 2023/07/31 13:00 | Juan Bautista Otegui v Ryusuke Horiuchi | 5-7,6-2,6-0 |
| ITF M15 Perugia | 2023/07/23 09:30 | Ryusuke Horiuchi v Giorgio Ricca | 0-6,4-6 |
| ITF M15 Gubbio | 2023/07/16 10:00 | Ryusuke Horiuchi v Daniel Bagnolini | 0-6,1-6 |
| ITF M25 Padova | 2023/07/09 10:55 | Leonardo Rossi v Ryusuke Horiuchi | 6-2,6-2 |
| ITF M25 Biella | 2023/07/04 16:45 | Joao Eduardo Schiessl v Ryusuke Horiuchi | 6-0,6-3 |
| ITF M25 Biella | 2023/07/03 07:00 | Ryusuke Horiuchi v Gianluca Cadenasso | 5-7,7-6,12-10 |
| ITF M25 Sapporo | 2023/09/10 03:00 | Yusuke Kusuhara v Lennon-Roark Jones | 4-6,6-4,10-6 |
| ITF M15 Karuizawa | 2023/05/30 03:00 | Ko Suzuki v Yusuke Kusuhara | 7-6,4-6,10-8 |
| ITF M15 Karuizawa | 2023/05/28 01:15 | Nishith Naveen v Yusuke Kusuhara | 1-6,1-6 |
| ITF M15 Monastir | 2023/04/26 13:35 | Yusuke Kusuhara v Adrien Gobat | 6-7,5-7 |
| ITF M15 Monastir | 2023/04/24 14:30 | Yusuke Kusuhara v Oscar Lacides | 6-3,7-6 |
| ITF M15 Monastir | 2023/04/24 08:00 | Warren Wood v Yusuke Kusuhara | 4-6,4-6 |
| ITF M15 Monastir | 2023/04/17 08:00 | Chen-Yu Lu v Yusuke Kusuhara | 6-4,0-6,10-7 |
| ITF M15 Monastir | 2023/04/16 08:00 | Yusuke Kusuhara v Yamato Sueoka | 7-6,6-4 |