Welcome to the “Sunny in Philadelphia” heir

“It’s Always Sunny in Philadelphia” stars Rob McElhenney and Kaitlin Olson (above) welcomed their first child on Wednesday — in between Philles’ games.

Said Kaitlin (who was brave enough to give birth at the couple’s Sherman Oaks home):

“I went into labor at the Phillies/Dodgers game on Tuesday night. As soon as Ryan Howard hit a 3 run home run, we felt comfortable leaving to go have our baby. Axel Lee McElhenney was born at home on September 1st at 12:52 pm. 8 lbs 7oz. We love him like crazy, even though he made us miss the second half of the game.”

Among the people who were in the Dodger Stadium sky box when Olson went into labor was WME’s Ari Greenburg, a close pal of the couple and longtime rep of McElhenney. Baby Axel now shares a birthday with Greenburg.