Michael Phelps moved the United States from fourth to second in the butterfly leg and the Americans went on to edge Australia for gold in the 4x100-meter medley relay, the final event of the world swimming championships.
Nicholas Thoman, Mark Gangloff, Phelps and anchor Nathan Adrian finished in 3 minutes, 32.06 seconds. Australia, with Hayden Stoeckel, Brenton Rickard, Geoff Huegill and James Magnussen, took the silver in 3:32.26.
Germany (Helge Meeuw, Hendrik Feldwehr, Benjamin Starke and Paul Biedermann) won the bronze in a time of 3:32.60.
American Ryan Lochte has won his fith gold medal of the world swim championships, easily finishing first in the 400-meter individual medley.
Lochte had a one-second lead Sunday after the opening butterfly leg and expanded that to two seconds over the backstroke and breaststroke legs before powering home in the freestyle to win by more than four seconds in 4 minutes, 07.13 seconds.
Teammate Tyler Clary took silver in 4:11.17 and Yuya Horihata of Japan the bronze in 4:11.98.
Olympic champion Michael Phelps did not race. He's taken the 400 IM off his schedule for the time being and isn't sure he will include it next year for the London Olympics.
Swimming's oldest record falls in Shanghai
The swimming world championships ended with a jolt Sunday when emerging Chinese star Sun Yang broke the oldest world record in the sport -- Australian great Grant Hackett's 10-year-old mark in the 1,500 meters.
Sun was more than two seconds off Hackett's pace with four laps to go in the marathon in the pool, but ignored fatigue and accelerated on the final two laps to finish in 14 minutes, 34.14 seconds, improving on Hackett's mark of 14:34.56 set at the 2001 worlds in Fukuoka, Japan.
"I was not obsessed with the world record before the final, because I wanted to focus on my plan," Sun said. "My goal is to win the gold."
After the race, Sun was congratulated on weibo -- China's version of Twitter -- by Liu Xiang, the 2004 Olympic gold medalist, a former world record holder in the 110-meter hurdles and a sports hero in China.
"I think Liu Xiang created history in 2004. I watched the games on TV and after he won the gold medal, I was very excited. I thought someday, I will be like him," Sun said.
The crowd at the Oriental Sports Center provided loud support over the final laps, erupting into more joy when the clock stopped four-tenths of a second inside Hackett's mark.
Fifth-place finisher Chad La Tourette of the United States said he was "just happy to be a part of it."
"I knew he was going to be close at the 800," La Tourette said. "That was a fantastic swim and it really just kind of sets himself apart as a once-in-a-generation type swimmer like Grant was."
It was only the second world record to fall in swimming since high-tech bodysuits were banned 19 months ago -- and Hackett's record had been the only mark to withstand the record deluge during the polyurethane era of 2008 and 2009.
American all-around star Ryan Lochte set the first world record since the return to textile suits at this meet Tuesday in the 200 individual medley.
The two world records set in this eight-day meet were a sharp contrast from the 43 marks that dropped at the last worlds in Rome two years ago.
