The world's premier sprinter, Usain Bolt, says he will rise to any challenge put forward by new world 100 metre champion and club-mate Yohan Blake.
Blake has emerged as the main challenger to Bolt's defence of his two sprint titles at next year's Olympic Games in London.
However, Bolt says bring it on.
Bolt ended the season by posting the fastest time over 100 metres when he claimed victory in 9.76 seconds while Blake ran a world leading and personal best 19.26 seconds in the 200 metres.
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