Willie Mays (1931-) Center fielder. Mays spent almost all of his 22-season career playing for the New York/San Francisco Giants, before finishing with the New York Mets. He was elected to the Baseball Hall of Fame in 1979. Signed OML (Selig) Ball. Mays has added ” HOF 79″. Ball and signature are in pristine condition. There is a Say Hey Hologram on the ball.