Stadium: Court 3 Round: 26 Ground: Clay
| ITF Japan F4 | 2017/03/29 05:40 | Naoki Tajima v Yusuke Takahashi | 6-3,1-6,4-6 |
| ITF Japan F5 | 2018/04/02 04:35 | Kawakami, Rimpei v Naoki Tajima | 3-6,4-6 |
| ITF Japan F4 | 2018/03/29 04:15 | Naoki Tajima v Shintaro Imai | 4-6,3-6 |
| ITF Japan F4 | 2018/03/28 02:40 | Niki, Takuto v Naoki Tajima | 5-7,6-7 |
| ITF Japan F3 | 2018/03/19 06:00 | Hong, Seong Chan v Naoki Tajima | 6-1,4-6,6-4 |
| ITF Japan F5 | 2017/04/04 02:30 | Naoki Tajima v Toshihide Matsui | 6-1,4-6,3-6 |
| ITF Japan F5 | 2017/04/02 01:00 | Oku, Hiromasa v Naoki Tajima | 1-6,0-6 |
| ITF Japan F5 | 2017/04/01 02:00 | Yuichiro Inui v Naoki Tajima | 4-6,0-6 |
| ITF Japan F4 | 2017/03/29 05:40 | Naoki Tajima v Yusuke Takahashi | 6-3,1-6,4-6 |
| ITF Japan F5 | 2018/04/02 03:40 | Sasai, Masaki 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 Chen, Ti | 6-2,6-3 |
| Shenzhen, China, Qualifying | 2018/03/11 02:45 | Grills, Jacob v Yusuke Takahashi | 4-6,6-4,2-6 |
| Challenger Zhuhai | 2018/03/06 06:40 | Yusuke Takahashi v Jaziri, Malek | 1-6,2-6 |
| Challenger Zhuhai Qual | 2018/03/05 02:00 | Yusuke Takahashi v Renta Tokuda | 6-4,6-4 |
| Challenger Zhuhai Qual | 2018/03/04 06:30 | Yusuke Takahashi v Podzus, Martins | 2-6,6-2,6-4 |
| Challenger Zhuhai Qual | 2018/03/03 04:15 | Yusuke Takahashi v Weissborn, Tristan | 7-6,4-6,6-3 |