After an unsuccessful appeal, the GB men's 4x400m squad will use the disappointment of disqualification as fuel on the fire ahead of next year's World Championships
Relay success for the US on the final evening of Olympic track and field action in Rio, as Ruth Beitia gains high jump gold and Thomas Röhler takes javelin title
Asha Philip, Desiree Henry, Dina Asher-Smith and Daryll Neita broke the national record for Olympic bronze four years after Britain failed to qualify a team for London 2012
With many major relay gold medals to her name, Natasha Hastings also eyes individual success and Stuart Weir profiles the American sprinter ahead of the Shanghai Diamond League
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