| WTT Feeder Havirov | 04/15 10:00 | 6 | 랜드류, 안드레아 v Ryoichi Yoshiyama | L | 3-1 | |
| WTT Feeder Dusseldorf | 04/11 16:45 | 3 | Ryoichi Yoshiyama v 강, 동수 | L | 1-3 | |
| WTT Feeder Dusseldorf | 04/11 12:00 | 4 | 두다, 베네딕트 v Ryoichi Yoshiyama | W | 1-3 | |
| WTT Feeder Dusseldorf | 04/10 17:00 | 5 | Ryoichi Yoshiyama v Luu, Finn | W | 3-0 | |
| WTT Feeder Dusseldorf | 04/10 12:20 | 6 | 곤잘레즈, 다니엘 v Ryoichi Yoshiyama | W | 2-3 | |
| Japan T League | 03/23 10:30 | - | 토가미, 순수케 v Ryoichi Yoshiyama | L | 3-0 | |
| Japan T League | 03/22 11:30 | - | 요시무라, 마하루 v Ryoichi Yoshiyama | W | 0-1 | |
| WTT Feeder Biella | 12/17 10:00 | 2 | Ryoichi Yoshiyama v 두다, 베네딕트 | L | 1-3 | |
| WTT Feeder Biella | 12/16 16:10 | 3 | 라센포스, 아드리앙 v Ryoichi Yoshiyama | W | 2-3 | |
| WTT Feeder Biella | 12/15 18:25 | 4 | Ryoichi Yoshiyama v 지무덴코, 야로슬라프 | W | 3-1 | |
| WTT Feeder Biella | 12/15 12:05 | 5 | 보보시카 미하이 v Ryoichi Yoshiyama | W | 2-3 | |
| WTT Feeder Biella | 12/14 16:15 | 6 | Ryoichi Yoshiyama v 오이보드, 존 마이클 | W | 3-2 | |
| Japan T League | 11/17 10:30 | - | 안, 재현 v Ryoichi Yoshiyama | L | 3-2 | |
| WTT Contender Taiyuan Quals | 11/07 12:25 | - | 스토야노프, 니아골 v Ryoichi Yoshiyama | L | 3-2 | |
| WTT Feeder Doha II | 10/18 10:15 | 4 | 팡, 유 엔 코엔 v Ryoichi Yoshiyama | L | 3-2 | |
| WTT Feeder Doha II | 10/17 16:00 | 5 | Ryoichi Yoshiyama v 누이팅크, 세드릭 | W | 3-1 | |
| WTT Feeder Doha II | 10/17 08:25 | 6 | Hyuk Kwon v Ryoichi Yoshiyama | W | 1-3 | |
| WTT Star Contender Lanzhou | 10/06 06:30 | 4 | Ryoichi Yoshiyama v 마, 진바우 | L | 2-3 | |
| WTT Star Contender Lanzhou | 10/05 06:30 | - | Shinozuka, H. v Ryoichi Yoshiyama | W | 2-3 | |
| WTT Star Contender Lanzhou | 10/04 11:40 | - | Ryoichi Yoshiyama v Junsung Oh | W | 3-2 | |
| WTT Star Contender Lanzhou Quals | 10/03 08:00 | - | Ryoichi Yoshiyama v Manush U. Shah | W | 3-0 | |
| WTT Star Contender Lanzhou Quals | 10/02 01:35 | - | 리, 혼 밍 v Ryoichi Yoshiyama | W | 1-3 | |
| Japan T League | 08/20 05:40 | - | Aida, Satoshi v Ryoichi Yoshiyama | L | 3-2 | |
| Japan T League | 08/11 04:20 | - | Shinozuka, H. v Ryoichi Yoshiyama | L | 3-1 | |
| Japan T League | 08/06 06:16 | - | Ryoichi Yoshiyama v Daito Shinozuka | L | 1-3 | |
| WTT Contender Zagreb Quals | 06/28 11:20 | - | Ryoichi Yoshiyama v 강, 동수 | L | 0-3 | |
| WTT Contender Zagreb Quals | 06/27 18:40 | - | 박, 강현 v Ryoichi Yoshiyama | W | 1-3 | |
| WTT Contender Zagreb Quals | 06/26 18:20 | - | 렘베르트, 바스티엔 v Ryoichi Yoshiyama | W | 1-3 | |
| Challenger Series TT | 05/30 12:10 | 1 | 버글런드, 시몬 v Ryoichi Yoshiyama | W | 2-3 | |
| Challenger Series TT | 05/30 10:45 | 2 | Ryoichi Yoshiyama v 로시, 카를로 | W | 3-1 |