Juan Antonio Marichal signed with the National League San Francisco Giants in 1957. He made his major league debut in 1960, and won 20 games. He made his major league debut in 1960, and, during his next 10 years with the Giants, had six seasons in which he won more than 20 games. After 14 years with San Francisco, he finished his career with the Red Sox and Dodgers in 1974 and 1975.
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