| Akita Masters | 08/15 04:30 | 4 | Yupeng Bai v Yosei Yamaguchi | L | 2-0 | |
| Akita Masters | 08/14 01:30 | 5 | B. R. Sankeerth v Yosei Yamaguchi | W | 0-2 | |
| Akita Masters | 08/13 00:40 | 6 | Yosei Yamaguchi v Vinson Chiu | - | Walkover | |
| Indonesia Masters - XD | 12/17 00:09 | - | Kenta Nishimoto v Yosei Yamaguchi | L | 2-1 | |
| Indonesia Masters - XD | 12/15 16:55 | - | Jui Ting Hsu v Yosei Yamaguchi | W | 0-2 |