The Olympic Stadium comes back to life on Friday as track and field events at London 2012 begin, with Jessica Ennis in action early on day one as she starts her heptathlon campaign.
Here are Friday's events to watch out for (all times BST):
Full schedule available on BBC Sport website
Jessica Ennis will make four separate appearances on Friday as London 2012's Olympic athletics programme begins. At 10:05 she starts off in the 100m hurdles, progressing through the high jump (11:15) and shot (19:00) put to finish the day with the 200m heats from 20:45. Ennis, a leading British hope for athletics gold, concludes her event on Saturday.
Read up on the protagonists:
Having taken bronze in her less-favoured 400m event earlier in the week, 23-year-old Rebecca Adlington looks a strong bet to retain her other Olympic title over 800m in Friday's Aquatics Centre evening session. Adlington qualified fastest from Thursday's heats, although Denmark's Lotte Friis could push her all the way. Elsewhere, having surrendered his signature 200m butterfly Olympic title to South African Chad le Clos, Michael Phelps has the chance for revenge in the men's 100m butterfly.
Katherine Grainger's determined battle to win an Olympic gold medal at the fourth time of asking reaches its climax at Eton Dorney. Grainger, 36, has three silver medals to her name from the Sydney, Athens and Beijing Games. She and Watkins are unbeaten since teaming up in 2010. Can they do it on the day?
Victoria Pendleton will try to put behind her the disappointment of being disqualified from Thursday's team sprint when she goes in the keirin - where riders are paced behind a motorised bike and then let loose for a final, chaotic race to the finish. Ed Clancy, Steven Burke, Geraint Thomas and Peter Kennaugh go head-to-head with Australia as GB defend their Olympic men's team pursuit title. Expect world records to fall.
Murray is certain to play for a medal after reaching the semi-finals but he faces a major test if he is to battle for gold, with the recently deposed world number one Novak Djokovic looking to make up for losing his Wimbledon crown last month.
- FOOTBALL (19:45-21:30):
Britain's women take on Canada for a place in the semi-finals at the City of Coventry Stadium. Prior to that Sweden face France, the United States play New Zealand and Brazil line up against Japan in the other last-eight clashes.
Basketball women v France 20:00, Football women v Canada 19:45, Handball women v Angola 09:30, Hockey men v Pakistan 16:00, Volleyball women v Dominican Republic 16:45, Water polo women v Italy 18:20.
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