Netherlandish rider Hans Peter Minderhoud rides his horse Nadine during the dressage individual grand prix freestyle of the Beijing 2008 Olympic Games equestrian events in Hong Kong, China, Aug. 19, 2008. (Xinhua/Lui Siu Wai)
Mark Spitz won seven gold medals at the 1972 Summer Olympics, an achievement only surpassed by Michael Phelps who won eight golds at the 2008 Olympics in Beijing. Spitz set new world records in all seven events in which he competed, a record that still stands. Since the year 1900, no other swimmer has ever gained so great a percentage of all the medals awarded for Olympic events held in a single Games.