Stadion: 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 | Rimpei Kawakami 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 | Takuto Niki v Naoki Tajima | 5-7,6-7 |
| ITF - Japan F3 | 2018/03/19 06:00 | Seong Chan Hong 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 | Hiromasa Oku 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 | 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 - Qualifikation | 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 - Qualifikation | 2018/03/05 02:00 | Yusuke Takahashi v Renta Tokuda | 6-4,6-4 |
| Challenger - Zhuhai - Qualifikation | 2018/03/04 06:30 | Yusuke Takahashi v Martins Podzus | 2-6,6-2,6-4 |
| Challenger - Zhuhai - Qualifikation | 2018/03/03 04:15 | Yusuke Takahashi v Tristan-Samuel Weissborn | 7-6,4-6,6-3 |