| Swimming |
2001 World Aquatics Championships |
Fukuoka |
 JPN |
50 m Backstroke, Men |
9 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
4 x 100 m Medley Relay, Men |
4 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2002 Pan Pacific Swimming Championships |
Yokohama |
JPN |
200 m Backstroke, Men |
14 |
JPN |
|
| Swimming |
2002 Asian Games |
Busan |
 KOR |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2002 Asian Games |
Busan |
KOR |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
 ESP |
4 x 100 m Medley Relay, Men |
🥉 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
ESP |
200 m Backstroke, Men |
19 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
ESP |
100 m Backstroke, Men |
6 |
JPN |
|
| Swimming |
2003 World Aquatics Championships |
Barcelona |
ESP |
50 m Backstroke, Men |
12 |
JPN |
|
| Swimming |
2004 Swim World Cup |
Stockholm |
 SWE |
200 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2004 Swim World Cup |
Stockholm |
SWE |
100 m Backstroke, Men |
🥈 |
JPN |
|
| Swimming |
2004 Swim World Cup |
Stockholm |
SWE |
50 m Backstroke, Men |
🥈 |
JPN |
|
| Swimming |
2004 Swim World Cup |
Berlin |
 GER |
50 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2004 Swim World Cup |
Berlin |
GER |
200 m Backstroke, Men |
🥇 |
JPN |
|
| Swimming |
2005 World Aquatics Championships |
Montréal |
 CAN |
50 m Backstroke, Men |
12 |
JPN |
|
| Swimming |
2005 World Aquatics Championships |
Montréal |
CAN |
100 m Backstroke, Men |
4 |
JPN |
|
| Swimming |
2005 World Aquatics Championships |
Montréal |
CAN |
200 m Backstroke, Men |
8 |
JPN |
|
| Swimming |
2005 World Aquatics Championships |
Montréal |
CAN |
4 x 100 m Medley Relay, Men |
🥉 |
JPN |
|
| Swimming |
2006 Swim World Cup |
Stockholm |
SWE |
50 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2006 Swim World Cup |
Stockholm |
SWE |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2006 Swim World Cup |
Berlin |
GER |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2006 Swim World Cup |
Berlin |
GER |
200 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2006 Pan Pacific Swimming Championships |
Victoria |
CAN |
4 x 100 m Medley Relay, Men |
🥈 |
JPN |
|
| Swimming |
2006 Pan Pacific Swimming Championships |
Victoria |
CAN |
200 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2006 Pan Pacific Swimming Championships |
Victoria |
CAN |
100 m Backstroke, Men |
🥉 |
JPN |
|
| Swimming |
2007 World Aquatics Championships |
Melbourne |
 AUS |
50 m Backstroke, Men |
10 |
JPN |
|
| Swimming |
2007 World Aquatics Championships |
Melbourne |
AUS |
100 m Backstroke, Men |
8 |
JPN |
|
| Swimming |
2007 World Aquatics Championships |
Melbourne |
AUS |
200 m Backstroke, Men |
7 |
JPN |
|
| Swimming |
2007 World Aquatics Championships |
Melbourne |
AUS |
4 x 100 m Medley Relay, Men |
🥈 |
JPN |
|