Shortstop Jimmy Rollins has been placed on the 15-day disabled list with a right groin strain suffered yesterday against Washington.

To fill his spot on the 25-man roster, the club activated third baseman Placido Polanco from the disabled list.

Rollins, 32, is hitting .268 this season with 22 doubles, 14 HR, 58 RBI, 79 runs and 28 stolen bases. He has appeared in 121 of the Phillies' 125 games while committing just five errors in 504 total chances (.990 fielding percentage).

Yesterday, after chasing down a groundball up the middle in the second inning and making a spinning throw to first, the Gold Glove shortstop grimaced in apparent pain. Rollins finished the frame in the field, but was replaced prior to the start of the third.

He was scheduled to have an MRI today.

Manager Charlie Manuel said he did not know when, exactly, Rollins hurt himself. The 32-year-old veteran, who had already left the Phillies clubhouse by the time it was open to reporters, went 0-for-2 with groundouts in the first and second innings.

Polanco, 35, was originally placed on the DL with a sports hernia on August 16 (retroactive to August 7). In 89 games this season, he is batting .275 with 40 RBI and 35 runs while posting a .976 fielding percentage, second-best among all NL third basemen.

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