| Swimming |
1984 Asian Aquatics Championships |
Seoul |
 KOR |
100 m Breaststroke, Men |
🥇 |
 JPN |
|
| Swimming |
1984 Asian Aquatics Championships |
Seoul |
KOR |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
 ESP |
200 m Breaststroke, Men |
18 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
ESP |
100 m Breaststroke, Men |
26 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
100 m Breaststroke, Men |
🥉 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1988 Asian Aquatics Championships |
Guangzhou |
 CHN |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1988 Asian Aquatics Championships |
Guangzhou |
CHN |
100 m Breaststroke, Men |
🥉 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 100 m Medley Relay, Men |
DQ |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 50 m Medley Relay, Men |
6 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
200 m Breaststroke, Men |
5 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
100 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
4 x 100 m Medley Relay, Men |
🥈 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1991 World Aquatics Championships |
Perth |
 AUS |
100 m Breaststroke, Men |
25 |
JPN |
|
| Swimming |
1991 World Aquatics Championships |
Perth |
AUS |
200 m Breaststroke, Men |
17 |
JPN |
|
| Swimming |
1992 Asian Aquatics Championships |
Hiroshima |
JPN |
200 m Breaststroke, Men |
🥇 |
JPN |
|