| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
 JPN |
100 m Breaststroke, Men |
14 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
200 m Breaststroke, Men |
🥉 |
JPN |
|
| Swimming |
2002 Asian Games |
Busan |
 KOR |
200 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
2003 Summer Universiade |
Daegu |
KOR |
200 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
2005 World Aquatics Championships |
Montréal |
 CAN |
200 m Breaststroke, Men |
11 |
JPN |
|
| Swimming |
2005 East Asian Games |
Macau |
 MAC |
100 m Breaststroke, Men |
🥉 |
JPN |
|
| Swimming |
2005 East Asian Games |
Macau |
MAC |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
2006 Pan Pacific Swimming Championships |
Victoria |
CAN |
100 m Breaststroke, Men |
18 |
JPN |
|
| Swimming |
2006 Pan Pacific Swimming Championships |
Victoria |
CAN |
200 m Breaststroke, Men |
6 |
JPN |
|
| Swimming |
2006 Asian Games |
Doha |
 QAT |
200 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
2007 World Aquatics Championships |
Melbourne |
 AUS |
200 m Breaststroke, Men |
16 |
JPN |
|