| WTT Star Contender Lanzhou Quals | 2023/10/03 08:00 | Ryoichi Yoshiyama v Manush Utpalbhai Shah | W | 3-0 |
| WTT Star Contender Lanzhou Quals | 2023/10/02 01:35 | Hon Ming Li v Ryoichi Yoshiyama | W | 1-3 |
| Japan T League | 2023/08/20 05:40 | Satoshi Aida v Ryoichi Yoshiyama | L | 3-2 |
| Japan T League | 2023/08/11 04:20 | Hiroto Shinozuka v Ryoichi Yoshiyama | L | 3-1 |
| Japan T League | 2023/08/06 06:16 | Ryoichi Yoshiyama v Daito Shinozuka | L | 1-3 |
| WTT Contender Zagreb Quals | 2023/06/28 11:20 | Ryoichi Yoshiyama v Dongsoo Kang | L | 0-3 |
| WTT Contender Zagreb Quals | 2023/06/27 18:40 | Ganghyeon Park v Ryoichi Yoshiyama | W | 1-3 |
| WTT Contender Zagreb Quals | 2023/06/26 18:20 | Bastian Rembert v Ryoichi Yoshiyama | W | 1-3 |
| WTT Contender Rio Quals | 2023/08/08 14:05 | Tzu-Yi Yang v Junsung Oh | L | 3-2 |
| WTT Contender Rio Quals | 2023/08/07 19:55 | John Oyebode v Junsung Oh | W | 1-3 |
| WTT Contender Lima | 2023/08/04 00:10 | Junsung Oh v Jonghoon Lim | L | 1-3 |
| WTT Contender Lima Quals | 2023/08/02 21:40 | Junsung Oh v Jules Rolland | W | 3-1 |
| WTT Contender Lima Quals | 2023/08/01 23:30 | Junsung Oh v Juan Perez | W | 3-2 |
| WTT Star Contender Ljubljana Quals | 2023/07/04 12:30 | Junsung Oh v Mihai Bobocica | L | 2-3 |
| WTT Star Contender Ljubljana Quals | 2023/07/03 15:15 | Junsung Oh v Ibrahima Diaw | W | 3-1 |
| WTT Contender Zagreb | 2023/06/30 16:00 | Zhendong Fan v Junsung Oh | L | 3-0 |