Thursday's evening session sees Usain Bolt return to the track in search of his 8th Olympic gold medal in the men's 200m final. Britain's Adam Gemili will hope to join him on the podium but faces a tough battle for a medal. Also on the track, Eilidh Doyle sneaked into the women's 400m Hurdles final while Shelayna Oskan-Clarke and Lynsey Sharp run alongside red-hot favourite Caster Semenya in the 800m semi-finals. The Decathlon competition draws to a close with Ashton Eaton in pole position to reclaim his gold medal while in the field, medals will be decided in the men's Shot Put and women's Javelin. Show less