Jessica Ennis begins her heptathlon with a personal best of 12.97 seconds in the hurdles and says: "That's a good start."

Carolina Kluft is up where she belongs at the top of the standings as she targets her third world crown

Tyson Gay powers into the 100m quarters and says the track at the Nagai Stadium is the fastest he has ever raced on

But Britain's Marlon Devonish is the fastest man through to the 100m quarter-final in 10.16 seconds

Andy Baddeley qualifies for Monday's 1500m semi-finals but is well outside his personal best of 3mins 34.74secs

Luke Kibet battles through the oppressive heat to win the marathon in two hours 15 minutes 59 seconds

Britain's Marilyn Okoro finishes well in the closing metres to reach the 800m semi-finals in a time of 2:01.78

Craig Pickering wins his quarter-final to join fellow Brits Devonish and Mark Lewis-Francis in the 100m semi-finals

Ennis can only land 13.93m in the shot put as she slips from second to sixth position in the heptathlon

Ennis's compatriot Kelly Sotherton produces a season-best performance in the shot to climb into third position

Phillips Idowu reaches the triple jump final after his first round leap of 17.07m is good enough to progress

Reese Hoffa wins the men's shot put gold ahead of fellow American Adam Nelson with a throw of 22.04m

Jessica Ennis produces a personal best on her way to winning the 200m and she moves up to fourth behind Sotherton

Ethiopia's Tirunesh Dibaba wins the 10,000m gold in the final event with Britain's Jo Pavey finishing an agonising fourth