| Swimming |
1986 World Aquatics Championships |
Madrid |
 ESP |
100 m Breaststroke, Men |
6 |
 JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
 KOR |
100 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
1987 Summer Universiade |
Zagreb |
 YUG |
100 m Breaststroke, Men |
6 |
JPN |
|
| Swimming |
1987 Summer Universiade |
Zagreb |
YUG |
200 m Breaststroke, Men |
12 |
JPN |
|
| Swimming |
1987 Summer Universiade |
Zagreb |
YUG |
4 x 100 m Medley Relay, Men |
🥈 |
JPN |
|
| Swimming |
1987 Pan Pacific Swimming Championships |
Brisbane |
 AUS |
100 m Breaststroke, Men |
8 |
JPN |
|
| Swimming |
1988 Asian Aquatics Championships |
Guangzhou |
 CHN |
100 m Breaststroke, Men |
4 |
JPN |
|