
Kariem Hussein of Switzerland celebrates after the men's 400m hurdles at the IAAF Diamond League athletics meeting in Lausanne, Switzerland, July 6, 2017. Kariem Hussein claimed the title with 48.79 seconds. (Xinhua/Ruben Sprich)

Kariem Hussein of Switzerland celebrates after the men's 400m hurdles at the IAAF Diamond League athletics meeting in Lausanne, Switzerland, July 6, 2017. Kariem Hussein claimed the title with 48.79 seconds. (Xinhua/Ruben Sprich)