Now that I think about it, what did he meant by 'putter'? I don't know anything about baseball but I feel like it was supposed to be a play on word or something.
The only putter I can find on the web is for golf.
Oh lord Diavolo. I think you might have made a mistake. Since what Sissy did there was throwing rocks. I'm guessing you meant the pitcher who throws the ball, is it? That'd be one hella big mistake. lol