Guo Jingjing was the fourth diver to win four Olympic gold medals (following Fu Mingxia, Greg Louganis and Pat McCormick) and at her retirement, was the female diver with the most Olympic medals (trailing only Dmitry Sautin among men). Uniquely, Guo won her medals on the springboard (3 m) only, while the others also medaled in the platform (10 m). More @Wikipedia
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