Stadium: Court 4 輪: 45
| 神戶挑戰賽資格賽 | 2017/11/04 05:20 | Yuto Sakai v Sora Fukuda | 1-6,3-6 |
| ITF日本F8 | 2017/06/15 01:00 | Yuto Sakai v 綿貫裕介 | 4-6,6-3,3-6 |
| ITF日本F8 | 2017/06/14 01:00 | Yuto Sakai v Yohei Ono | 7-5,6-0 |
| ITF日本F8 | 2017/06/12 00:00 | 盧卡•卡斯泰爾諾沃 v Yuto Sakai | 7-6,4-6,6-7 |
| ITF日本F8 | 2017/06/11 03:00 | Yuto Sakai v 羽澤慎治 | 6-1,6-4 |
| ITF日本F6 | 2017/06/01 04:10 | Yuto Sakai v Sora Fukuda | 6-7,3-6 |
| ITF日本F6 | 2017/05/31 01:00 | Yuto Sakai v Sora Fukuda | 6-7,3-6 |
| ITF日本F6 | 2017/05/30 03:30 | Yuto Sakai v 小澤新 | 7-6,7-5 |
| ITF關島F1 | 2017/06/22 03:25 | Masaki Osafune v 井藤祐一 | 2-6,4-6 |
| ITF關島F1 | 2017/06/20 06:00 | Masaki Osafune v 史蒂芬•高 | 6-3,6-4 |
| ITF日本F7 | 2017/06/06 04:05 | Renta Tokuda v Masaki Osafune | 6-1,3-6,6-1 |
| ITF日本F7 | 2017/06/04 01:00 | Masaki Osafune v Shoma Kato | 6-3,6-3 |
| ITF日本F6資格賽 | 2017/05/29 03:40 | Yuki Matsuo v Masaki Osafune | 7-6,6-2 |
| ITF中國F7 | 2017/05/17 03:40 | 戴恩•凱林 v Masaki Osafune | 6-1,6-1 |
| ITF中國F7 | 2017/05/16 05:30 | 洪瑞晨 v Masaki Osafune | 2-6,6-1,2-6 |
| ITF中國F7資格賽 | 2017/05/15 03:55 | Chukang Wang v Masaki Osafune | 7-5,4-6,1-6 |