Ben Affleck - who has two daughters with wife Jennifer Garner - is said to be keen to add a bouncing baby boy to his brood.
"Ben's happy to keep going until he gets his boy," a source tells America's OK! magazine. "He has visions of dressing a little guy in Red Sox gear, tossing a baseball around and cheering in the stands together.
"Jennifer has told friends she's done having children. She jokes with Ben, 'If you want more babies, you'll have to find a way to produce them yourself!'"
However, Ben remains optimistic his wife will eventually change her mind.
"Jen is a big softie when it comes to giving Ben what he wants," the source adds, "[If he can't have a son] he'll have those little girls dressed head-to-toe in Red Sox gear!"
Source: Showbiz Spy