Stadium: Court 5 Round: 25 Ground: Synthetic outdoor
| ITF - M15 Kashiwa | 2019/04/04 01:00 | Yusuke Takahashi v Keisuke Saitoh | 6-2,6-1 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/19 01:00 | Keisuke Saitoh v Jumpei Yamasaki | 2-6,3-6 |
| ITF - M15 Nishi-Tokyo | 2019/03/13 01:00 | Sekiguchi, Shuichi v Keisuke Saitoh | 6-3,6-2 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/08 02:40 | Hong, Seong Chan v Keisuke Saitoh | 6-3,6-0 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/06 01:00 | Moritani, Soichiro v Keisuke Saitoh | 2-6,0-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/11 05:00 | Winter Meagher v Yamanaka, Kyohei | 0-6,4-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/11 00:00 | Yamanaka, Kyohei v Tagashira, Kento | 6-1,3-6,10-5 |
| ITF Japan F8 | 2018/06/09 05:30 | Shimizu, Kazuki v Yamanaka, Kyohei | 6-1,7-6 |
| ITF Japan F8 | 2018/06/09 01:00 | Higa, Akito v Yamanaka, Kyohei | 2-6,2-6 |
| ITF Japan F7 Qual | 2018/06/03 02:50 | Kishi, Ryota v Yamanaka, Kyohei | 6-1,6-2 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Yamanaka, Kyohei v Cajigan, Christopher | 7-6,6-0 |