ATHLETICS WORLD CHAMPIONSHIPS Venue: Olympic Stadium, Berlin Date: 15-23 August Coverage: Watch the action live and highlights on BBC Two, BBC HD, Red Button, Radio 5 live and the BBC Sport website (video for UK users only)
Full BBC coverage details
Highlights - Men's 100m quarter-finals
Triple Olympic champion Usain Bolt and American Tyson Gay both eased into Sunday's 100m semi-finals at the World Championships in Berlin.
Reigning world champion Gay stormed his quarter-final in 9.98 seconds, while Bolt was so far ahead he could share a smile with heat winner Daniel Bailey.
"I didn't need to do any more work. I was just enjoying myself," said Bolt.
British duo Dwain Chambers and Tyrone Edgar both qualified for the semis but Simeon Williamson missed out.
Former world record-holder Asafa Powell only just squeezed through his opening heat in third place, when easing up after 60m, but made no mistake in the quarter-finals, setting the fastest time of 9.95.
It was the 52nd time Powell has run under 10 seconds, equalling Maurice Greene's record.
The Jamaican could yet have a say in Sunday's final despite all the pre-Championship talk of a Gay-Bolt showdown.
Gay, the champion from Osaka in 2007, endured a miserable Olympics in 2008 after rushing back to competition from a debilitating hamstring injury.
He has set the fastest time in the world this year and believes he can break Bolt's world record of 9.69 seconds, but he appeared to be protecting a groin problem in Saturday's heats despite qualifying comfortably enough for Sunday's semis, scheduled for 1810 BST.
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