At the 2008 Summer Olympics in Beijing, China, Grevers won two gold medals by swimming in the preliminary heats of the 4×100-meter freestyle relay and 4×100-meter medley relay (swimming the backstroke leg) as the Americans went on to win the finals in those events and medals are awarded to participants at any step along the way. Grevers also won an individual silver medal in the 100-meter backstroke in a time of 53.11-second, 0.57 of a second behind the winner, world record holder Aaron Peirsol.