Le Clos enjoys more success
Chad le Clos continued his remarkable 2012 when he was crowned 100m butterfly champion at the World Short-Course Championships in Istanbul.
The South African sprang to prominence at the London Olympics when he edged out Michael Phelps on the touch in the 200m butterfly.
Phelps had not been beaten at top international level in the event since 2002 and Le Clos clearly could not absorb his achievement at the time, while his father was overcome in the stands in an emotional outburst captured on TV.
Tonight, the 20-year-old eclipsed Ian Crocker's world textile best from 2004 with a time of 48.82 seconds ahead of American pair Thomas Shields and Ryan Lochte.
Japan's Daiya Seto, 18, became just the fifth man to dip below the four minute mark as he won the 400m individual medley.
Seto produced a superb breaststroke leg to touch in 3mins 59.15secs with four-time Olympic medallist Laszlo Cseh of Hungary second.
Cseh said: "I expected the gold and would have liked to swim a better time. I'm not happy with the silver."
In the 100m backstroke, Matt Grevers added the short-course title to his Olympic crown.
The American made the most of being 6ft 8in to edge out Russian Stanislav Donets by 0.02s in 49.89.
Grevers said: "He (Donets) is definitely the king of the short course and I am the king of the long course. I considered myself pretty good, but he was as well. I am glad I beat him on this one."
Lauren Boyle claimed the 800m freestyle crown ahead of Denmark's 2008 Olympic bronze medallist Lotte Friis and Chloe Sutton of the United States.
The New Zealander was inside Rebecca Adlington's championship record until the 750m mark before dipping outside in 8:08.62.
Ruta Meilutyte set a championship record of 29.44 to win the 50m breaststroke and Olivia Smoliga won the 100m backstroke (56.64).
Fabio Scozzoli took the men's 100m breaststroke title and Lochte claimed his third gold medal - and fourth overall - as the United States won the 4x200m freestyle relay.