Why Bolt Can't Find Worthy Challengers

Usain Bolt is undoubtedly the biggest name in world sport. But unless someone emerges who can realistically challenge his hegemony, the majestic Jamaican might begin to lose some of his stardust.

Bolt completed another sprint double on Saturday when he added the world 200m title to the 100 he took earlier in the week, but his victory left something of a hollow feeling, achieved as it was with him easing up in the last 15 meters.

Having secured the same double at the last two Olympics and the 2009 world championships and almost certainly been denied another only by a false start in the 2011 world 100m final, Bolt's victories are less races than processions.