Stadium: Court 2 Round: 28 Ground: Clay
| ITF Japan F5 | 2018/04/05 02:00 | Shintaro Imai v Hiroyasu Ehara | 3-6,5-7 |
| ITF Japan F5 | 2018/04/04 01:00 | Takuto Niki v Hiroyasu Ehara | 2-6,6-2,4-6 |
| ITF Japan F5 | 2018/04/02 04:10 | Yuki Matsuo v Hiroyasu Ehara | 2-6,2-6 |
| ITF Japan F4 | 2018/03/30 01:00 | Ryota Tanuma v Hiroyasu Ehara | 6-3,4-6,6-4 |
| ITF Japan F4 | 2018/03/29 01:00 | Makoto Ochi v Hiroyasu Ehara | 6-4,5-7,4-6 |
| 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 F5 | 2018/04/05 02:00 | Shinji Hazawa v Yusuke Takahashi | 5-7,0-6 |
| ITF Japan F5 | 2018/04/04 05:10 | Naoki Tajima v Yusuke Takahashi | 4-6,2-6 |
| ITF Japan F5 | 2018/04/02 03:40 | Masaki Sasai v Yusuke Takahashi | 6-3,3-6,3-6 |
| Challenger Qujing | 2018/03/21 04:55 | Hubert Hurkacz v Yusuke Takahashi | 7-5,6-3 |
| Challenger Qujing | 2018/03/19 02:00 | Yusuke Takahashi v Ti Chen | 6-2,6-3 |
| Challenger Shenzhen Qual | 2018/03/11 02:45 | Jacob Grills v Yusuke Takahashi | 4-6,6-4,2-6 |
| Challenger Zhuhai | 2018/03/06 06:40 | Yusuke Takahashi v Malek Jaziri | 1-6,2-6 |
| Challenger Zhuhai Qual | 2018/03/05 02:00 | Yusuke Takahashi v Renta Tokuda | 6-4,6-4 |