| ITF Hong Kong F6 MD | 2018/01/01 03:25 | Sakai Y / Tanaka Y v Heliovaara H / Kwong M | 7-5,6-1 |
| ITF Japan F8 MD | 2017/06/17 04:00 | Sakai Y / Tanaka Y v Noguchi R / Shimizu Y | 6-3,6-2 |
| ITF Japan F8 MD | 2017/06/16 03:35 | Sakai Y / Tanaka Y v Kobayashi M / Mochizuki Y | 7-6,6-3 |
| ITF Japan F8 MD | 2017/06/15 04:50 | Sakai Y / Tanaka Y v Ito Y / Onoda K | 6-4,5-7,10-8 |
| ITF Japan F8 MD | 2017/06/14 06:40 | Nagao K / Oku H v Sakai Y / Tanaka Y | 4-6,2-6 |
| ITF Hong Kong F6 MD | 2018/01/01 05:20 | Lam C / Li H Y A v Fukuda S / Moritani S | 3-6,1-6 |