What position did Willie Mays primarily play?

What uniform number did Fernando Valenzuela wear with the Dodgers? What position did Hank Aaron primarily play? Hank Aaron is best known for playing with which MLB team? What uniform number did Hank Aaron wear with the Braves? Willie Mays is best known for playing with which MLB team? What uniform number did Willie Mays wear with the Giants? What position did Willie McCovey primarily play? Willie McCovey is best known for playing with which MLB team?