The United States fell behind Friday in the Duel in the Pool, putting it in position for its first loss in the event.
Missy Franklin has become the winningest female swimmer ever at the world championships.
Yuliya Efimova of Russia has broken the 50-meter breaststroke world record during the morning heats at the swimming world championships.
Wearing fluorescent orange sneakers, Ryan Lochte eased out of his seat and moved gingerly toward the exit of the Palau Sant Jordi.
Missy Franklin won her fourth gold medal of the world swimming championships with a strong anchor leg for the United States in the 4x200-meter freestyle relay Thursday.
Missy Franklin has claimed her third gold medal of the world swimming championships with a victory in the 200-meter freestyle.
Katie Ledecky has crushed the world record in the 1,500 freestyle for her second gold medal at the world swimming championships.
Missy Franklin has claimed gold in the first of her eight events at the world championships.
Two-time Olympic champion Kirsty Coventry of Zimbabwe says she'll swim through the 2016 Rio de Janeiro Games.
Qiu Bo won his second consecutive world title in the men's 10-meter platform on Sunday, giving China its ninth gold medal in 10 diving events at the world championships.
Russia has completed another sweep of synchronized swimming at the world championships.
Swimming's governing body voted Friday to include two different mixed-gender relays -- the 4x100-meter freestyle and the 4x100 medley -- at future world championships.
Svetlana Romashina has won her third gold medal of the Barcelona world championships, winning the synchronized swimming solo.
Spyridon Gianniotis of Greece defended his title in the grueling 10-kilometer open water event at the swimming world championships Monday.
The world swimming federation has named Gwangju, South Korea, as host of the 2019 swimming world championships, and Budapest, Hungary, as host for 2021.