Personal Bests: 400 – 47.2 (1984); 400H – 49.20 (1987).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1984 Summer Olympics | Athletics | Ryoichi Yoshida | ||||
| 400 metres Hurdles, Men (Olympic) | 7 h2 r2/3 | |||||
| 4 × 400 metres Relay, Men (Olympic) | Japan | 8 h1 r2/3 | ||||
| 1988 Summer Olympics | Athletics | Ryoichi Yoshida | ||||
| 400 metres Hurdles, Men (Olympic) | 5 h2 r1/3 | |||||
| 4 × 400 metres Relay, Men (Olympic) | Japan |