| Swimming |
1986 Asian Games |
Seoul |
 KOR |
4 x 200 m Freestyle Relay, Men |
🥇 |
 JPN |
|
| Swimming |
1987 Pan Pacific Swimming Championships |
Brisbane |
 AUS |
200 m Freestyle, Men |
9 |
JPN |
|
| Swimming |
1987 Pan Pacific Swimming Championships |
Brisbane |
AUS |
400 m Freestyle, Men |
8 |
JPN |
|
| Swimming |
1987 Pan Pacific Swimming Championships |
Brisbane |
AUS |
1,500 m Freestyle, Men |
8 |
JPN |
|
| Swimming |
1987 Pan Pacific Swimming Championships |
Brisbane |
AUS |
4 x 200 m Freestyle Relay, Men |
4 |
JPN |
|
| Swimming |
1988 Asian Aquatics Championships |
Guangzhou |
 CHN |
400 m Freestyle, Men |
🥉 |
JPN |
|
| Swimming |
1988 Asian Aquatics Championships |
Guangzhou |
CHN |
1,500 m Freestyle, Men |
🥉 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
400 m Freestyle, Men |
7 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
800 m Freestyle, Men |
8 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
1,500 m Freestyle, Men |
8 |
JPN |
|
| Swimming |
1989 Pan Pacific Swimming Championships |
Tokyo |
JPN |
4 x 200 m Freestyle Relay, Men |
4 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
200 m Freestyle, Men |
🥈 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
400 m Freestyle, Men |
🥇 |
JPN |
|
| Swimming |
1990 Asian Games |
Beijing |
CHN |
4 x 200 m Freestyle Relay, Men |
🥇 |
JPN |
|
| Swimming |
1991 World Aquatics Championships |
Perth |
AUS |
200 m Freestyle, Men |
25 |
JPN |
|
| Swimming |
1991 World Aquatics Championships |
Perth |
AUS |
400 m Freestyle, Men |
15 |
JPN |
|