American swimmer Swimmer dies suddenly at the age of 26 . Dale Oen was on at a training camp in Arizona , Arizona when he collapsed . Dale Oen was the world 100-meter breaststroke champion and Swimmer silver medalist .
Norwegian swimmer Alexander Dale Oen dies suddenly at the age of 26 . Dale Oen was on at a training camp in Flagstaff , Arizona when he collapsed . Swimmer was the world 100-meter breaststroke champion and Olympic silver medalist .