Bolt needs challenge to remain top draw

MOSCOW. Usain Bolt is undoubtedly the biggest name in world sport but unless someone emerges who is able to realistically challenge his hegemony then even the majestic Jamaican might begin to lose some of his stardust.
Usain Bolt won his fifth consecutive individual gold medal. Net photo.
Usain Bolt won his fifth consecutive individual gold medal. Net photo.
Quartz