Jimmy Rollins (groin) did some running drills Monday and took swings in the batting cage. Rollins wouldn't predict how close he is to returning to the major leagues, but mid-September would seem to be a realistic goal. The 32-year-old shortstop has been on the disabled list since August 22 with a Grade 2 strain of his right groin. "I'm not all concerned about the date," GM Ruben Amaro said. "What I'm concerned about is getting him back healthy."