| Swimming |
1998 Asian Games |
Bangkok |
 THA |
4 x 100 m Medley Relay, Men |
🥇 |
 JPN |
|
| Swimming |
1999 Swim World Cup |
Hobart |
 AUS |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
1999 Summer Universiade |
Palma de Mallorca |
 ESP |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
1999 Pan Pacific Swimming Championships |
Sydney |
AUS |
200 m Backstroke, Men |
20 |
JPN |
|
| Swimming |
1999 Pan Pacific Swimming Championships |
Sydney |
AUS |
100 m Backstroke, Men |
5 |
JPN |
|
| Swimming |
1999 Pan Pacific Swimming Championships |
Sydney |
AUS |
4 x 100 m Medley Relay, Men |
🥉 |
JPN |
|
| Swimming |
2001 East Asian Games |
Osaka |
JPN |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
2001 East Asian Games |
Osaka |
JPN |
100 m Backstroke, Men |
🥇 |
JPN |
|
| Swimming |
2001 World Aquatics Championships |
Fukuoka |
JPN |
50 m Backstroke, Men |
18 |
JPN |
|
| Swimming |
2001 World Aquatics Championships |
Fukuoka |
JPN |
100 m Backstroke, Men |
19 |
JPN |
|
| Swimming |
2001 World Aquatics Championships |
Fukuoka |
JPN |
4 x 100 m Medley Relay, Men |
6 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
100 m Butterfly, Men |
11 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
100 m Backstroke, Men |
4 |
JPN |
|
| Swimming |
2002 Asian Games |
Busan |
 KOR |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
2002 Asian Games |
Busan |
KOR |
100 m Backstroke, Men |
🥇 |
JPN |
|
| Swimming |
2003 Swim World Cup |
Paris |
 FRA |
50 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2003 Swim World Cup |
Paris |
FRA |
100 m Backstroke, Men |
🥈 |
JPN |
|
| Swimming |
2003 Swim World Cup |
Stockholm |
 SWE |
50 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2003 Swim World Cup |
Stockholm |
SWE |
100 m Backstroke, Men |
🥈 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
ESP |
50 m Backstroke, Men |
15 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
ESP |
100 m Backstroke, Men |
12 |
JPN |
|