| Swimming |
1982 World Aquatics Championships |
Guayaquil |
 ECU |
4 x 200 m Freestyle Relay, Men |
11 |
 JPN |
|
| Swimming |
1982 World Aquatics Championships |
Guayaquil |
ECU |
4 x 100 m Freestyle Relay, Men |
12 |
JPN |
|
| Swimming |
1982 World Aquatics Championships |
Guayaquil |
ECU |
200 m Freestyle, Men |
42 |
JPN |
|
| Swimming |
1985 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 100 m Freestyle Relay, Men |
4 |
JPN |
|
| Swimming |
1985 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 200 m Freestyle Relay, Men |
4 |
JPN |
|
| Swimming |
1985 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 100 m Medley Relay, Men |
5 |
JPN |
|
| Swimming |
1985 Pan Pacific Swimming Championships |
Tokyo |
JPN |
400 m Freestyle, Men |
9 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
 ESP |
1,500 m Freestyle, Men |
29 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
ESP |
400 m Freestyle, Men |
36 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
ESP |
200 m Freestyle, Men |
40 |
JPN |
|
| Swimming |
1986 World Aquatics Championships |
Madrid |
ESP |
100 m Freestyle, Men |
44 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
 KOR |
4 x 200 m Freestyle Relay, Men |
🥇 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
4 x 100 m Freestyle Relay, Men |
🥈 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
1,500 m Freestyle, Men |
🥈 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
400 m Freestyle, Men |
🥈 |
JPN |
|
| Swimming |
1986 Asian Games |
Seoul |
KOR |
200 m Freestyle, Men |
🥈 |
JPN |
|
| Swimming |
1992 Asian Aquatics Championships |
Hiroshima |
JPN |
200 m Freestyle, Men |
6 |
JPN |
|