Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Kursumlijska Banja | 2024/05/16 08:30 | Hayato Matsuoka v Stefan Popovic | 3-6,5-7 |
| ITF M15 Kursumlijska Banja | 2024/05/15 10:10 | Nikola Jovic v Hayato Matsuoka | 6-2,5-7,2-6 |
| ITF M25 Sabadell | 2024/05/01 07:00 | Eric Vanshelboim v Hayato Matsuoka | 6-4,7-5 |
| ITF M25 Sabadell | 2024/04/30 10:00 | Toprak Avcibasi v Hayato Matsuoka | 7-5,6-0 |
| ITF M25 Sabadell | 2024/04/30 07:00 | Hugo Garcia Gomez v Hayato Matsuoka | 2-6,0-6 |
| ITF M25 Sabadell | 2024/04/28 09:30 | Alvaro Bueno Gil v Hayato Matsuoka | 3-6,4-6 |
| ITF M15 Azay-le-Rideau | 2024/04/17 15:30 | Hayato Matsuoka v Gleb Sakharov | 6-7,5-7 |
| ITF M15 Kashiwa | 2024/04/03 00:55 | Sanhui Shin v Hayato Matsuoka | 2-6,6-3,6-4 |
| ITF M15 Kursumlijska Banja | 2024/05/22 07:00 | Milos Mikovic v Keisuke Saitoh | 1-6,0-6 |
| ITF M15 Kursumlijska Banja | 2024/05/17 07:00 | Keisuke Saitoh v Edas Butvilas | 6-7,6-3,2-6 |
| ITF M15 Kursumlijska Banja | 2024/05/16 07:00 | Keisuke Saitoh v Ignacio Parisca | 7-6,6-1 |
| ITF M15 Kursumlijska Banja | 2024/05/14 09:55 | Daisuke Sumizawa v Keisuke Saitoh | 4-6,7-5,3-6 |
| ITF M25 Kursumlijska Banja | 2024/05/09 07:00 | Keisuke Saitoh v Peter Buldorini | 6-1,1-6,1-6 |
| ITF M25 Kursumlijska Banja | 2024/05/08 07:00 | Aleksandar Hudjec v Keisuke Saitoh | 0-6,2-6 |
| ITF M15 Kursumlijska Banja | 2024/05/01 10:35 | Keisuke Saitoh v Branko Djuric | 4-6,2-6 |
| ITF M15 Kursumlijska Banja | 2024/04/30 09:20 | Keisuke Saitoh v Yannik Kelm | 6-2,6-4 |