John Krasinski Alec Baldwin New EraForget the age of platinum blond reality stars duking it out over boyfriend rumors, when it comes to Alec Baldwin and John Krasinski's celebrity feud, only one person will leave the ring -- or stadium -- alive.

Die hard Red Sox fan, Krasinski, and navy blue bleeding Yankees fan, Baldwin, are taking it to the next level when it comes to their MLB rivalry New Era commercial. Krasinski even goes as far as spray painting Baldwin's dog -- or at least the mut he thought was Baldwin's dog -- with Red Sox iconography. We'll put the win in Baldwin's court for this one.