They said he is day-to-day.
Rollins, who was unavailable for comment after Philadelphia's 10-6 victory, limped into second base with a two-out double in the third inning and later hobbled home to give the Phillies a 4-0 lead. Rollins smiled in the dugout after he scored his run, but Wilson Valdez took his place at shortstop in the top of the fourth.
"He was sick a little bit today and he was dehydrated," Phillies manager Charlie Manuel said. "He didn't take [batting practice] today. He was kind of under the weather."
Manuel said he thought the tightness in Rollins' hamstring was a product of his dehydration.
"Our trainer and doctor, they feel like he's going to be OK," Manuel said.
Rollins had two stints on the 15-day disabled list this season because of a strained right calf: April 13-May 17 and May 22-June 21.