17 Aug 2008
On August 17, Phelps won his eighth gold medal in the men’s 4×100-meter medley relay, breaking Mark Spitz’s record of seven gold medals won in a single Olympic Games, which had stood since 1972.[91] Phelps, along with teammates Brendan Hansen, Aaron Peirsol, and Jason Lezak, set a new world record in the event with a time of 3 minutes and 29.34 seconds, 0.7 seconds ahead of second-place Australia and 1.34 seconds faster than the previous record set by the United States at the 2004 Olympic Games in Athens. When Phelps dived in to swim the 100-meter butterfly leg, the third leg of the 400-meter medley, the United States had been trailing Australia and Japan. Phelps completed his split in 50.1 seconds, the fastest butterfly split ever for the event, giving teammate Jason Lezak a more than half-second lead for the final leg, which he would hold onto to clinch the event in world record time.