Rollins, who was back at shortstop and leading off, was one of the first players to arrive at Busch Stadium on Thursday and took extra batting practice early in the afternoon.
Camryn Drew Rollins was born late Sunday. She is the first child for Rollins and his wife, Johari. Rollins was not with the team for its three-game series with Washington.
Rollins was somewhat overwhelmed by his first 72 hours of fatherhood.
"No baby talk," he said before the game.
Rollins, who went through a 2-for-29 slump in April, has moved his average to .229. The Phillies are 12-5 when he has scored at least one run this season.