MELBOURNE: American Michael Phelps did it again, setting his second world record in as many nights.
He was joined in the world record parade on Wednesday at the World championships by fellow American Leila Vaziri and Laure Manaudou of France.
Phelps won the 200m butterfly in a time of 1m 52.09s. It bettered his own mark of 1:53.71 set in February 2007 in Columbia, Missouri.
``I surprised myself, I went so fast,'' said Phelps. ``I wanted to go 52.00 but I didn't expect to swim 52.00.
``I'm showing I'm in solid shape now. I had a really good swim earlier in the season where I broke the world record. I wanted to take it out tonight, so I'm pretty happy.''
Wu Peng of China took the silver and Nikolay Skvortsov of Russia was third.
Vaziri set the world 50m backstroke record in a semifinal. Her time of 28.16 seconds broke the previous mark of 28.19 set by Janine Pietsch of Germany in Berlin in May 2005.
Manaudou, who won the 400m freestyle gold on Sunday, set her new mark in the 200m freestyle, finishing in 1:55.52, breaking a 24-hour-old record set by Italian Federica Pellegrini of 1:56.47 in Tuesday's semifinals.
Second-place finisher Annika Lurz of Germany also bettered Pellegrini's record, finishing in 1:55.68. Pellegrini took the third place in 1:56.97.
Manaudou said she was inspired by the world record performances by the others on Wednesday.
``I told myself I had to have one too,'' said Manaudou, who pulled out of the 50m backstroke semifinal two races earlier on Wednesday to conserve her energy for the 200m freestyle.
The results: Men: 50m breaststroke: 1. Oleg Lisogor (Ukr), 27.66s, 2. Brendan Hansen (U.S.); 3. Cameron Van Der Burgh (RSA); 200m butterfly: 1. Michael Phelps (U.S.), 1:52.09 (world record, previous 1:53.71 by Phelps on Feb. 17, 2007); 2. Wu Peng (Chn); 3. Nikolay Skvortsov (Rus); 800m freestyle: 1. Oussama Mellouli (Tun), 7:46.95; 2. Przemyslaw Stanczyk (Pol); 3. Craig Stevens (Aus).
Women: 200m freestyle: 1. Laure Manaudou (Fra), 1:55.52 (world record, previous 1:56.47 by Federica Pellegrini, Italy, March 27, 2007); 2, Annika Lurz (Ger); 3. Federica Pellegrini (Ita). AP