Led by Melvin Stewart's world record performance in the men's 200 meter butterfly, U.S. swimmers won five of six gold medals Saturday at the World Swimming Championships.

Stewart, 22, won the 200 meters in one minute and 55.69 seconds, to deny German Michael Gross his third consecutive title.Gross led the first 150 meters, and finished in 1:56.78.

Gross, who won the title in the 1982 world championships, and again in Madrid in 1986, held the previous record of 1:56.24.

He clocked 54.86 seconds for the opening 100. Stewart swam about a body length behind the 26-year-old West German until the final turn, when they came off the wall level.