6. JoAnne Carner
She won five U.S. Amateur titles as JoAnne Gunderson, earning the nickname "The Great Gundy." But she's better remembered as "Big Mama," the fun-loving, earthy, long-driving Hall of Famer who turned pro late, at 30, and still won 43 LPGA events, including two U.S. Opens. Once, when making the dubious claim that a Yankees manager had taught her how to win, Carner said, "The only thing I never learned from Billy Martin was how to knock a guy out in a bar."