Spitz vs. Phelps: Who's the greatest?
Comparing the two U.S. swimmers' best Games
Last Updated: July 27, 2012
U.S. swimmer Mark Spitz shocked the world when he won seven Olympic gold medals in 1972. Fellow American Michael Phelps upped the ante with his eight wins in Beijing 36 years later. So who had the greatest performance in the pool? Judge for yourself with these race results.
Photos: Associated Press