But he did reveal something else in his joke-filled press conference: he plans to stay involved with baseball.
He didn't make any commitments or even say the word "coach" but he did say: "I love to work with the minor leaguers."
One of the most touching parts of the presser came when WFAN's Sweeny Murti asked Mo how he'd like to be remembered. "I was there for others," Mo said, even though he cemented his legacy as "the greatest of all time."
Like Derek Jeter, Mo knows how to handle interviews with the best of them. That response sounded like it came from the heart.
Mo could be compared to a magician because he baffles hitters with one pitch at one speed. One distinction, though, is that Mo loves teaching others how to pull of his trick.
Mo saved at least 28 games for 15 straight seasons. He finished more games than any pitcher. Ever. It would be an awful waste of wisdom if he didn't become a coach.