Qatar\'s Abderrahman Samba leads the men\'s 400 metres hurdles
Qatar\'s Abderrahman Samba celebrates after winning the men\'s 400 metres hurdles
Qatar\'s Mutaz Barshim competes in the men\'s high jump
Qatar\'s Mutaz Barshim competes in the men\'s high jump
Athletes compete in the men\'s 1500 metres
Kenya\'s Elijah Motonei Manangoi gestures after winning the men\'s 1500 metres
Supporters cheer during a competition
Kenya\'s Ronald Kwemoi leads the men\'s 3000 metres
Akani Simbine (South Africa), Justin Gatlin (US), Asafa Powell (Jamaica) compete in men\'s 100 metres