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Live coverage of the morning session of day three of the World Championships, presented by triple jump world record holder Jonathan Edwards.

Welshman Dai Greene begins his world title defence in the 400m hurdles, with medal contender Perri Shakes-Drayton among three Brits in the women's equivalent race.

Rising star Katerina Johnson-Thompson is the sole British representative in the heptathlon following the withdrawal of Olympic gold medallist Jessica Ennis-Hill. The European Under-23 champion begins with the 100m hurdles and high jump.

Steve Cram leads the commentary team, with former Olympic heptathlon champion Denise Lewis providing the analysis.