Especially as Mitch's story about going to his first baseball game is really Billy Crystal talking about that event in his own life.
Phil and Ed rescuing the drowning Mitch. It's a genuinely frightening moment in a movie that's been mostly funny so far, but when they manage to grab hold of him, their relief is evident.
As the guys discuss baseball, Bonnie sighs in exasperation over how men obsess over sports as opposed to 'real life.' Phil replies that, when he was a teenager, baseball was the only thing he and his father could relate over.