The United States added to their Olympic medal haul at Rio de Janeiro on Sunday as Katie Ledecky smashed her own world record to win gold in the 400-metre freestyle and Michael Phelps helped his team to victory in the 4x100-metre freestyle relay.
Great Britain got their first medals of the Games as Adam Peaty won gold in the 100-metre breaststroke—also beating his own world record, set in the heats—while Jazz Carlin claimed a silver behind Ledecky in the 400 freestyle.
China picked up three gold medals as their athletes triumphed in weightlifting, shooting and diving, while Italy took judo and fencing golds to hold fourth place in the rankings behind Australia, who saw Catherine Skinner win in the women's trap.