Mark Spitz： Seven Gold Medals
Going into the 1972 Olympic Games in Munich， Mark Spitz was a cocky 22-year-old swimmer who had failed to win a single individual gold in the 1968 games in Mexico City （although he did get two team golds）。 Nonetheless， Spitz bragged he would win six gold medals in Germany. He didn't. He won seven——the most anyone has ever won in a single Olympiad——and broke seven world records in the process. Spitz's career total of 11 medals ties him with fellow swimmer Matt Biondi for the most decorated U.S. Olympic athlete.