Montreal - South Africa's Chad le Clos continued his hot streak at the Short Course World Swimming Championships in Montreal with his third gold of the championships in the 50m butterfly.
Le Clos, who had smashed his own world record to claim gold in the 100m butterfly on Thursday, was once again too hot for the competition.
The 24-year-old from Durban hit the wall in 21.98sec, almost half a second faster than American Tom Shields, who took silver in 22.40. Australia's David Morgan won bronze in 22.47.
But there was an upset for teenager Lilly King, the Olympic champion, who suffered a surprise defeat in the 100m breaststroke against Jamaica's Alia Atkinson. Atkinson, the world record holder, finished in 1:03.03, with King just behind in 1:03.35.
In the men's 400m medley, Japan's Daiya Seto made it a hat-trick of world titles with another commanding performance in the event he has dominated over the past four years.
Seto, gold medallist in the multi-stroke discipline at both the 2012 and 2014 short course championships, claimed his third consecutive title to finish in 3:59.24.
Britain's Max Litchfield won silver in 4:00.66 while Hungary's David Verraszto took bronze with a time of 4:01.56.
Russia, whose men had claimed gold in the 4x50 freestyle on Friday, again demonstrated their relay power to take victory in the 4x50 medley relay.
The Russian quartet of Andrei Shabasov, Kirill Prigoda, Aleksandr Popkov and Vladimir Morozov finished in 1:31.52, just ahead of the United States and Belarus.
The biggest cheer of the night came in the final event, where Canada's women's 4x200m relay quartet claimed a popular gold ahead of the United States. Russia took bronze.
Results of finals on Saturday at the Short Course Swimming World Championships at Windsor, Ontario
4x50m medley relay
1. Russia (Andrei Shabasov, Kirill Prigoda, Aleksandr Popkov, Vladimir Morozov) 1min 31.52sec
2. United States 1:31.97
3. Belarus 1:32.49
1. Chad Le Clos (RSA) 21.98
2. Tom Shields (USA) 22.40
3. David Morgna (AUS) 22.47
200m individual medley
1. Katinka Hosszu (HUN) 2:02.90
2. Ella Eastin (USA) 2:05.02
3. Madisyn Cox (USA) 2:05.93