As Santiago Casilla's wife prepares to give birth to their baby girl, the Giants have placed their closer on the Paternity List and recalled reliever Steven Okert.
In 29 appearances out of the bullpen, Casilla is 1-2 with a 2.67 ERA in 27 innings pitched. He has also recorded 14 saves, good for sixth in the National League.
Okert, 24, has logged 5.2 innings for the Giants this season. The left-handed reliever is 0-0 with a 6.35 ERA.
At Triple-A with the Sacramento River Cats, Okert is 3-1 with a 3.97 ERA in 18 games this season.