Matt Jaukovic, a former Montenegro swimmer now competing for Australia, broke the 50-meter butterfly short-course world record at a World Cup meet Saturday.
Jaukovic finished in 22.50 seconds Saturday to break the previous mark of 22.60 set by Kaio Almeida of Brazil in Santos, Brazil in December 2005.
In other races, Olympic 1,500-meter champion Oussama Mellouli of Tunisia won three events _ the 400 freestyle and individual medleys over 100 and 400 meters. Katheryn Meakum of South Africa picked up two wins, in the 200 individual medley and 800 freestyle.
World record holder Stefan Nystrom of Sweden won the 100 freestyle in 47.45 seconds, nearly two seconds outside his world mark.
Nick D'Arcy, kicked off the Australian Beijing Olympic team due to assault charges resulting from a bar fight, made a successful return to the pool.
D'Arcy, facing charges of recklessly inflicting grievous bodily harm on former swimmer Simon Cowley in a Sydney bar on March 30, finished in a dead heat with Australian compatriot Chris Wright in the 200 butterfly, recording times of 1 minute, 53.37 seconds on the first night of the two-night World Cup meet.
"I got behind the blocks and I was thinking it could have gone one of two ways," D'Arcy said. "Swim really well which I feel I have done or bombed out."