Actress Kaitlin Olson has given birth to a baseball baby - she went into labor during a Los Angeles Dodgers game on Tuesday.

Olson and husband Rob McElhenney became parents to Axel Lee McElhenney on Wednesday afternoon, but the actress' contractions started the night before at Dodger Stadium.

She tells People.com, "I went into labor at the Phillies/Dodgers game on Tuesday night. As soon as (Phillies star) Ryan Howard hit a three-run home run, we felt comfortable leaving to go have our baby. We love him like crazy, even though he made us miss the second half of the game."

The It's Always Sunny in Philadelphia co-stars wed in 2008.

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