Frank Robinson, OF
Career: 1956-76, Reds, Orioles, others
Fun fact: Only player to win MVP in both leagues
He might be the most underrated superstar of all time, and one of the most ferocious competitors ever to play the game.
He nearly reached 3,000 hits and 600 homers, he won a Triple Crown and, above all else, stands this quote from a former teammate, Hall of Famer Brooks Robinson: "When Frank came to Baltimore, he taught us all how to win." -- Tim Kurkjian