Willie Mays was as close to perfection as a baseball player could possibly be. No one's game has ever been more complete. There was nothing he couldn't do. His peak, great as it was - and that was very great indeed - may not have reached quite as high as Mantle's - but Mays extended his greatness over a much longer period than Mantle was able to do. While Ruth and Williams were indeed more productive hitters than Mays, Willie Mays was a very, very great hitter himself - and he was far superior to both in every other facet of the game. Mays was a much better teammate. He was much more durable. He was the smartest baseball player I've ever seen or ever heard about, the greatest base runner, the greatest outfielder.
Willie Mays, people. The greatest baseball player the world has ever seen.
Now and forever.