| Swimming |
1978 World Aquatics Championships |
West-Berlin |
 GER |
100 m Breaststroke, Men |
6 |
 JPN |
|
| Swimming |
1978 World Aquatics Championships |
West-Berlin |
GER |
200 m Breaststroke, Men |
9 |
JPN |
|
| Swimming |
1978 World Aquatics Championships |
West-Berlin |
GER |
4 x 100 m Medley Relay, Men |
8 |
JPN |
|
| Swimming |
1978 Asian Games |
Bangkok |
 THA |
100 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1978 Asian Games |
Bangkok |
THA |
200 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1978 Asian Games |
Bangkok |
THA |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
1982 World Aquatics Championships |
Guayaquil |
 ECU |
100 m Breaststroke, Men |
24 |
JPN |
|
| Swimming |
1982 World Aquatics Championships |
Guayaquil |
ECU |
200 m Breaststroke, Men |
17 |
JPN |
|
| Swimming |
1982 World Aquatics Championships |
Guayaquil |
ECU |
4 x 100 m Medley Relay, Men |
11 |
JPN |
|
| Swimming |
1982 Asian Games |
New Delhi |
 IND |
100 m Breaststroke, Men |
🥈 |
JPN |
|
| Swimming |
1982 Asian Games |
New Delhi |
IND |
200 m Breaststroke, Men |
🥉 |
JPN |
|
| Swimming |
1982 Asian Games |
New Delhi |
IND |
4 x 100 m Medley Relay, Men |
🥇 |
JPN |
|
| Swimming |
1983 Summer Universiade |
Edmonton |
 CAN |
100 m Breaststroke, Men |
🥇 |
JPN |
|
| Swimming |
1983 Summer Universiade |
Edmonton |
CAN |
200 m Breaststroke, Men |
🥈 |
JPN |
|