Stadion: Court 3 Round: 54 Ground: Clay
| ITF - Japan F4 | 2018/03/25 05:00 | Masaki Osafune v Yu Hsiang Chiu | 2-6,4-6 |
| ITF - Japan F5 | 2018/03/31 00:30 | Yu Hsiang Chiu v Tamaki Yamao | 6-2,7-6 |
| ITF - Japan F4 | 2018/03/28 03:20 | Chuhan Wang v Yu Hsiang Chiu | 3-6,6-0,6-4 |
| ITF - Japan F4 | 2018/03/26 01:00 | Cing-Yang Meng v Yu Hsiang Chiu | 7-6,1-6,1-6 |
| ITF - Japan F4 | 2018/03/25 05:00 | Masaki Osafune v Yu Hsiang Chiu | 2-6,4-6 |
| ITF - Indien F4 | 2018/03/20 08:00 | Yu Hsiang Chiu v Anirudh Chandrasekar | 7-6,5-7,5-7 |
| ITF - Indien F3 | 2018/03/14 04:00 | Sidharth Rawat v Yu Hsiang Chiu | 6-4,7-6 |
| ITF - Indien F3 | 2018/03/13 05:45 | Yu Hsiang Chiu v Lance-Pierre Du Toit | 6-7,6-2,7-5 |
| ITF - Indien F2 | 2018/03/04 04:30 | Yu Hsiang Chiu v Nicholas Bybel | 1-6,4-6 |
| ITF - Japan F5 | 2018/03/31 00:30 | Masaki Osafune v Shunsuke Wakita | 6-7,6-3,6-0 |
| ITF - Japan F4 | 2018/03/25 05:00 | Masaki Osafune v Yu Hsiang Chiu | 2-6,4-6 |
| ITF - Japan F2 | 2018/03/12 00:30 | Soichiro Moritani v Masaki Osafune | 7-6,6-0 |
| ITF - Japan F1 | 2018/03/06 01:00 | Naru Shirafuji v Masaki Osafune | 6-0,6-3 |
| ITF - Japan F1 | 2018/03/03 04:30 | Cheong Hwi Kim v Masaki Osafune | 1-6,1-6 |
| Challenger - Kyoto - Qualifikation | 2018/02/18 06:05 | Masaki Osafune v Takuto Niki | 3-6,2-6 |
| Challenger - Toyota - Qualifikation | 2017/11/11 02:15 | Yuto Sakai v Masaki Osafune | 7-6,1-6,6-1 |
| ITF - Guam F1 | 2017/06/22 03:25 | Masaki Osafune v Yuichi Ito | 2-6,4-6 |