Today at the Games

THE MAIN EVENT

15.30 Athletics Unless there is a major surprise in the semi-finals of the men's 100m final (at 13.05), the "Bird's Nest" Stadium will see two Jamaicans, Usain Bolt, Asafa Powell and Tyson Gay, America's world champion, compete in what could be one of the great races of all time. All three eased through their heats yesterday and while Bolt is the world record holder it would take a brave man to predict the outcome

BRIT WATCH

09.15 Boxing Britain's flyweight James Degale meets the American Shawn Estrada in the last 16 of the middleweight division

12.30 Athletics Britain's Marilyn Okoro, second-fastest qualifier, seeks to make the final in the women's 800m semi-finals in the distance which Kelly Holmes won four years ago

13.30 Hockey Only a win against Japan will do as Britain's women attempt to keep alive their hopes of qualifying for the final stages

WHAT YOU MAY HAVE MISSED OVERNIGHT

03.00 Swimming Women's 200m backstroke final, with Britain's 17-year-old Lizzie Simmonds (above) involved after a British-record time in the semi-finals

03.07 Swimming Men's 100m butterfly final. Michael Phelps went for a magnificent seventh gold medal

03.51 Swimming Women's 50m freestyle semi-final, with Britain's Fran Halsall, 18, hoping for a place in tomorrow's final

04.00 Trampolining Britain's Claire Wright was hoping to qualify for Monday's final

05.00 Badminton Xie Xingfang was taking on Zhang Ning in an all-Chinese women's singles final

05.10 Athletics First outing in the heats for Britain's world gold and silver 400m medallists Christine Ohuruogu and Nicola Sanders, as well as the American favourite, Sanya Richards

06.45 Boxing Britain's Khalid Yafai was facing a tough task against Cuba's Andris Laffita Hernandez in the flyweights last 16

COMING UP LATER TODAY

09.00 Tennis Men's doubles final

11.00 Men's football Brazil take on Cameroon and Italy face Belgium in the first quarter-finals

12.15 Equestrianism Britain's Emma Hindle and Laura Bechtolsheimer, lying fourth and 24th, compete in the second day of individual dressage

13.00 Athletics Can the European long jump silver medallist Greg Rutherford and British record holder Chris Tomlinson, who almost missed the Games with a calf injury, press their medal ambitions ?

14.00 Men's football Lionel Messi's Argentina play the Netherlands and Nigeria face the Ivory Coast in the quarter-finals

15.15 Men's basketball Unbeaten US and Spain meet in a match to decide who will be their group's top seed in the quarter-finals

IF YOU WANT TO STAY UP LATE

02.00 Shooting Britain's Jonathan Hammond in qualifying for the men's three-positions rifle competition. The final starts at 06.30

03.00 Track cycling Britain's men in qualifying for the team pursuit. The first round at 11.25

03.00 Swimming Women's 50m freestyle final

03.37 Swimming Women's 4x100m medley relay final

04.05 Track cycling Victoria Pendleton, the world champion, starts in the women's sprint qualifying. The next round is at 10.25 with repechages at 11.15

04.20 Track cycling Britain's world champion, Chris Hoy, and Jason Kenny race in the men's sprint qualifying. Further rounds at 09.30, 10.15, 10.45 and 11.20

All times BST