| WTT Feeder - Havirov | 04/15 10:00 | 6 | Andrea Landrieu v Ryoichi Yoshiyama | L | 3-1 | |
| WTT Feeder Dusseldorf | 04/11 16:45 | 3 | Ryoichi Yoshiyama v Dongsoo Kang | L | 1-3 | |
| WTT Feeder Dusseldorf | 04/11 12:00 | 4 | Benedikt Duda v Ryoichi Yoshiyama | W | 1-3 | |
| WTT Feeder Dusseldorf | 04/10 17:00 | 5 | Ryoichi Yoshiyama v Finn Luu | W | 3-0 | |
| WTT Feeder Dusseldorf | 04/10 12:20 | 6 | Daniel Gonzalez v Ryoichi Yoshiyama | W | 2-3 | |
| Japonia - T League | 03/23 10:30 | - | Shunsuke Togami v Ryoichi Yoshiyama | L | 3-0 | |
| Japonia - T League | 03/22 11:30 | - | Maharu Yoshimura v Ryoichi Yoshiyama | W | 0-1 | |
| WTT Feeder Biella | 12/17 10:00 | 2 | Ryoichi Yoshiyama v Benedikt Duda | L | 1-3 | |
| WTT Feeder Biella | 12/16 16:10 | 3 | Adrien Rassenfosse v Ryoichi Yoshiyama | W | 2-3 | |
| WTT Feeder Biella | 12/15 18:25 | 4 | Ryoichi Yoshiyama v Yaroslav Zhmudenko | W | 3-1 | |
| WTT Feeder Biella | 12/15 12:05 | 5 | Mihai Bobocica v Ryoichi Yoshiyama | W | 2-3 | |
| WTT Feeder Biella | 12/14 16:15 | 6 | Ryoichi Yoshiyama v John Oyebode | W | 3-2 |