Dina Asher-Smith, Savannah Marshall, sailing and more at Rio 2016
Last Updated: 17/08/16 8:42pm
Hannah Mills and Saskia Clark are guaranteed a sailing gold in Wednesday's women's 470 medal race after building an unassailable lead.
The British pair are 20 points clear of second placed New Zealand counterparts Jo Aleh and Olivia Pownie and will top the silver they won in London four years ago to cap a fine week for Team GB sailing after Giles Scott won his country's 17th gold medal on Tuesday.
Brit watch
Lorraine Ugen will aim for qualification into Wednesday's women's long jump final and Dina Asher-Smith has an eye on the women's 200m final. Cindy Ofili is in the heats prior to the women's 100m hurdles final.
Team GB are into the women's hockey semi-finals where they will face New Zealand, with the Netherlands playing Germany in the other bracket.
Savannah Marshall fights Nouchka Fontijn in the women's boxing middleweight quarter-finals.
Going for gold
Host nation Brazil will be aiming to continue their traditional dominance in the women's beach volleyball, a sport that is defined by this year's location on the Copacabana. Brazil have appeared in seven of 10 Olympic finals since beach volleyball arrived on the scene and another gold could be one of the defining moments of Rio 2016 for the hosts.
Indonesia and Malaysia will contest the mixed doubles badminton final, while Japan and China are in the men's table tennis gold medal match. The men's 3000m steeplechase will also be decided.
Don't miss
The women's golf teeing off. Charley Hull and Catriona Matthew are representing Team GB. The three-day individual event follows the men's tournament which GB's Justin Rose won.
Host nation Brazil will look to Barcelona forward Neymar for inspiration as they take on Honduras for a place in the men's football final.