Day 15 saw the curtain fall on the track and field action at London 2012, and once again it was Usain Bolt who stole the headlines on a day when 32 gold medals were won.
Usain Bolt brought the track and field Athletics action at London 2012 to a fittingly brilliant close on Day 15, anchoring the Jamaican 4 x 100m Relay team to gold in a new world record.
Chris Hoy began his bid for a sixth Olympic Games gold medal with a first-round victory in the men's Keirin, while the women's Omnium and Sprint were also under way at the Velodrome.
Frenchman Gregory Bauge and Great Britain's Jason Kenny remain on a Sprint final collision course after both cyclists advanced to the semi-finals at the London 2012 Velodrome.