London 2012 Olympics: Day Nine must-see moments

Usain Bolt and his fellow sprint stars will command the attention at the end of another packed day, after Ben Ainslie attempts to become the greatest Olympic sailor of all time and Andy Murray takes on Roger Federer.

Here are Sunday's events to watch out for (all times BST):

Full schedule available on BBC Sport website

There can be no question that Usain Bolt running the men's 100m final is the most eagerly awaited of Olympic events, but he might not have it all his own way after recent defeats by fellow Jamaican Yohan Blake and the memory of his false start at last year's World Championships. British medal hopes lie with Christine Ohuruogu in the women's 400m (21:10) and Yamile Aldama in the women's triple jump (19:35).

Ainslie has been involved in a dramatic battle with Denmark's Jonas Hogh-Christensen all week and he goes into Sunday's decisive Finn medal race knowing a fourth gold medal is tantalisingly close. Iain Percy and Andrew Simpson might be a safer bet (13:00) for Britain having dominated the Star class.

  • TENNIS (14:00): Andy Murray, men's singles and mixed doubles

Murray returns to Centre Court for another crack at Roger Federer just four weeks after losing the Wimbledon final to the Swiss star, and as in Grand Slams the Olympic final will also be played over five sets. Murray could end the day as a double Olympic champion as he then teams up with Laura Robson to play Max Mirnyi and Victoria Azarenka in the mixed doubles final.

  • TRACK CYCLING (10:00-18:47): Ed Clancy, men's omnium

Clancy will start the second and final day of the multi-discipline omnium in fourth place after winning the flying lap, finishing 11th in the points race and fifth in the elimination race on Saturday. With his stronger events to come in the individual pursuit (10:00), scratch race (17:01) and time trial (18:16), a medal is a real possibility.

Smith won bronze on the pommel horse in Beijing and is a candidate for gold in London after finishing top in qualification with one of the most difficult routines in the world.

Women's boxing makes its Olympic debut with three excellent British medal hopes in the shape of Nicola Adams, Natasha Jonas and Savannah Marshall.

  • OTHER GB TEAMS IN ACTION

Basketball women v Brazil 22:15, Handball women v Croatia 16:15, Hockey men v Australia 19:00, Volleyball women v Japan 14:45, Water Polo women v Spain (20:20).