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World record holder Usain Bolt of Jamaica poses after a news conference ahead of the IAAF World Athletics Championships in Daegu August 25, 2011. REUTERS/Lee Jae-Won

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Bolt show upstaged by Powell pull-out

DAEGU, South Korea (Reuters) - Asafa Powell has rarely, if ever, upstaged Usain Bolt but he managed it on Thursday when his withdrawal from the world championships dominated a farcical Jamaican team press conference.