Round: 26 Ground: Hardcourt outdoor
| ITF Japan F4 | 2018/03/28 01:00 | Jumpei Yamasaki v Makoto Ochi | 1-6,2-6 |
| ITF Japan F3 | 2018/03/24 02:00 | Seong Chan Hong v Makoto Ochi | 7-6,6-1 |
| ITF Japan F3 | 2018/03/23 02:00 | Kaito Uesugi v Makoto Ochi | 4-6,6-4,3-6 |
| ITF Japan F3 | 2018/03/22 07:50 | Makoto Ochi v Tung-Lin Wu | 6-4,6-2 |
| ITF Japan F3 | 2018/03/22 05:15 | Kento Takeuchi v Makoto Ochi | 3-6,2-6 |
| ITF Japan F3 | 2018/03/19 06:40 | Issei Okamura v Makoto Ochi | 6-7,3-6 |
| ITF Japan F2 | 2018/03/14 01:00 | Tung-Lin Wu v Makoto Ochi | 6-2,6-4 |
| ITF Japan F2 | 2018/03/13 04:40 | Tamaki Yamao v Makoto Ochi | 7-5,3-6,1-6 |
| ITF Japan F4 | 2018/03/28 03:00 | Shao-Fan Liu v Hiroyasu Ehara | 1-6,5-7 |
| ITF Japan F3 | 2018/03/22 04:45 | Tung-Lin Wu v Hiroyasu Ehara | 6-4,7-6 |
| ITF Japan F3 | 2018/03/19 01:00 | Tamaki Yamao v Hiroyasu Ehara | 6-2,3-6,0-6 |
| ITF Japan F2 | 2018/03/13 02:10 | Yuta Shimizu v Hiroyasu Ehara | 7-6,6-3 |
| Challenger Yokohama | 2018/03/01 03:35 | Jordan Thompson v Hiroyasu Ehara | 6-4,6-2 |
| Challenger Yokohama | 2018/02/27 06:50 | Hiroyasu Ehara v Andrew Whittington | 7-6,6-7,6-4 |
| Challenger Yokohama Qual | 2018/02/26 01:00 | Zhe Li v Hiroyasu Ehara | 6-7,6-3,4-6 |
| Challenger Yokohama Qual | 2018/02/25 01:00 | Tung-Lin Wu v Hiroyasu Ehara | 5-7,3-6 |