With world champion Jerome Young and silver medallist Tyree Washington out of the Olympics, the men's 400m field looks wide open. Daniel Caines , Tim Benjamin and Malachi Davis lead the British charge at 7.20, all hoping to emulate Roger Black 's medal-winning 1996 showing.
There's also action from today's final heptathlon event, the 200m, plus, at 7.30, the women's discus qualifying. Steve Cram , Stuart Storey , Paul Dickenson , Brendan Foster and Sally Gunnell commentate.
Plus, Suzi Perry and Richard Simmons report on the sailing action and look forward to tomorrow when the first medals will be decided.
Presented by Sue Barker and Hazel Irvine , with Michael Johnson , Colin Jackson and Jonathan Edwards.
Executive producer Martin Hopkins ; Executive editor Dave Gordon DIGITAL AND INTERNET VIEWERS: digital satellite and cable viewers can choose from four extra Olympic events, and Freeview viewers from two extra events, by pressing the red handset button. Internet users can watch five streams of live footage at www.bbc.co.uk/olympics