Yasuhiro Koseki
Biographical information
| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Yasuhiro•Koseki |
| Used name | Yasuhiro•Koseki |
| Original name | 小関•也朱篤 |
| Born | 14 March 1992 in Tsuruoka, Yamagata (JPN) |
| Measurements | 188 cm / 80 kg |
| Affiliations | Miki House Sports Club (Japan) |
| NOC |  Japan |
Results
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2016 Summer Olympics | Swimming (Aquatics) | JPN |
Yasuhiro Koseki | |||
| 100 metres Breaststroke, Men (Olympic) | 6 | |||||
| 200 metres Breaststroke, Men (Olympic) | 5 | |||||
| 4 × 100 metres Medley Relay, Men (Olympic) | Japan | 5 |
Special Notes
- Listed in Olympians Who Won a Medal at the Summer Universiade (1–1–0 2013 Kazan SWI gold: 100 m breaststroke, silver: 4×100 m medley relay)
- Listed in Olympians Who Won a Medal at the Pan Pacific Swimming Championships (3–3–0 2014 Gold Coast gold: 100 m breaststroke and 200 m breaststroke, silver: 4×100 m medley relay; 2018 Tokyo gold: 100 m breaststroke, silver: 4×100 m medley relay and 4×100 m medley mixed relay)
- Listed in Olympians Who Won a Medal at the World Aquatics Championships (0–1–0 2017 Budapest SWI silver: 200 m breaststroke)
- Listed in Olympians Who Won a Medal at the World Short-Course Swimming Championships (25 m) (0–0–2 2018 Hangzhou bronze: 100 m breaststroke and 4×100 m medley relay)
- Listed in Olympians Who Won a Medal at the Asian Games (3–5–1 2014 Incheon SWM silver: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley relay, bronze: 200 m breaststroke; 2018 Jakarta/Palembang SWM gold: 50 m breaststroke, 100 m breaststroke, and 200 m breaststroke, silver: 4×100 m medley relay and 4×100 m medley mixed relay)