Stadium: Court 10 Round: 62 Ground: Clay
| ITF Japan F5 | 2018/04/05 02:00 | Shinji Hazawa v Yusuke Takahashi | 5-7,0-6 |
| ITF Japan F5 | 2018/04/04 01:00 | Chuhan Wang v Shinji Hazawa | 5-7,5-7 |
| ITF Japan F5 | 2018/04/02 06:25 | Yuki Mochizuki v Shinji Hazawa | 0-6,0-6 |
| ITF Japan F5 | 2018/04/01 00:30 | Shinji Hazawa v Jie Cui | 5-7,6-2,7-6 |
| ITF Japan F4 | 2018/03/26 01:00 | Shinji Hazawa v Jack Murray | 4-6,5-7 |
| ITF Japan F3 | 2018/03/22 03:00 | Seong Chan Hong v Shinji Hazawa | 7-6,6-3 |
| ITF Japan F3 | 2018/03/19 03:15 | Shinji Hazawa v Takuto Niki | 7-5,6-3 |
| ITF Japan F3 | 2018/03/18 01:00 | Shinji Hazawa v Rimpei Kawakami | 6-3,6-3 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | Yutaro Matsuzaki v Teppei Uesugi | 4-6,0-6 |
| ITF Japan F4 | 2018/03/26 01:00 | Jumpei Yamasaki v Teppei Uesugi | 6-2,7-5 |
| ITF Japan F4 | 2018/03/25 01:00 | Takumi Kato v Teppei Uesugi | 1-6,4-6 |
| ITF Japan F4 | 2018/03/24 00:00 | Teppei Uesugi v Naru Shirafuji | 6-2,6-3 |
| ITF Japan F3 | 2018/03/18 01:00 | Teppei Uesugi v Tamaki Yamao | 3-6,4-6 |
| ITF Japan F3 | 2018/03/17 02:30 | Aoran Wang v Teppei Uesugi | 6-7,2-6 |
| ITF Japan F1 | 2018/03/03 01:00 | Teppei Uesugi v Kaito Itsusaki | 7-6,0-6,2-6 |
| Challenger Yokohama Qual | 2018/02/25 01:00 | Zhe Li v Teppei Uesugi | 6-0,6-3 |