Brooklyn Decker and Andy Roddick Welcome a Son

This is the first child for the model and the former tennis star.

The couple welcomed their first child, a baby boy, on Sept. 30, a source confirmed to ABC News.

No other details, including the baby's name, were made available.

Decker, 28, and Roddick, 33, have been married since 2009.

"So this happened..." she wrote next to a photo of herself cradling her baby bump. "#the3ofus."