Ledecky takes third gold; Efimova makes second final

IMAGE: Gold medalists Allison Schmitt, Leah Smith, Maya Dirado and Katie Ledecky of the United States pose during the medal ceremony for the Women's 4 x 200m Freestyle Relay......

PHOTOS: Records tumble as Team USA enjoy huge night

IMAGE: Caeleb Dressel has already won three golds in Gwangju and is on course to repeat his haul of seven world titles, a feat that not even Michael Phelps managed. Photograph: Maddie Meyer/Getty......

World Swim C'ships: Sun embroiled in more podium controversy at Worlds

  IMAGE: Gold medalist Sun Yang of China yells across at protesting Duncan Scott of Great Britain (right) as bronze medalists Martin Malyutin of Russia (centre) watches during the medal......

PIX: Dressel continues golden run; Aussie women create WR

Caeleb Dressel already had two golds draped around his neck in Gwangju and on Thursday the American got another one in the blue riband event -- the 100 freestyle. IMAGE: Olympic 100 breaststroke......

Sleepless Efimova enjoys dream swim, Campbell impresses

Yuliya Efimova of Russia set a world record in the 50 metres breaststroke and Australia's Cate Campbell left her rivals for 50 freestyle gold trailing in qualifying at the world championships in......