Stadium: Center Court Round: 62 Ground: Hardcourt outdoor
| ITF M25 Takasaki | 2023/09/18 00:55 | Leo Vithoontien v Ryusuke Horiuchi | 6-2,7-6 |
| ITF M25 Takasaki | 2023/09/17 01:00 | Maximus Kawabata v Ryusuke Horiuchi | 1-6,0-6 |
| ITF M25 Sapporo | 2023/09/11 02:30 | Ryusuke Horiuchi v Yusuke Kusuhara | 3-6,6-3,6-10 |
| 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 Nevers | 2023/10/03 10:50 | Loan Lestir v Yanis Ghazouani Durand | 6-7,0-6 |
| ITF M15 Forbach | 2023/09/25 09:45 | Loan Lestir v Raphael Calzi | 2-6,4-6 |
| ITF M15 Forbach | 2023/09/24 13:40 | James Davis v Loan Lestir | 7-6,3-6,9-11 |
| ITF M25 Plaisir | 2023/09/11 07:00 | Loan Lestir v Hugo Pierre | 4-6,2-6 |
| ITF M25 Plaisir | 2023/09/10 09:20 | Loan Lestir v Kelyan Brinon | 6-1,6-1 |
| ITF M25 Bagneres-De-Bigorre | 2023/09/06 14:50 | Loan Lestir v Tristan Lamasine | 3-6,1-6 |
| ITF M25 Uriage | 2023/07/10 08:00 | Mehdi Sadaoui v Loan Lestir | 3-6,6-2,10-8 |
| ITF M25 Uriage | 2023/07/10 07:00 | Loan Lestir v Charlelie Cosnet | 6-0,6-2 |