Furcal went on the 15-day DL before Sunday's game against the Mets after he re-injured his left hamstring Saturday. Because of hamstring and groin injuries, he has played in only nine games this season, and he missed all of 2013 because of an elbow injury.
Derek Dietrich was recalled from Triple-A New Orleans and was in the lineup Sunday at second base.
The 36-year-old Furcal could be out for an extended stretch, and there's no timetable for his return, manager Mike Redmond said.
Furcal, a three-time All-Star, was batting .171. The Marlins signed him to a $3 million, one-year deal last offseason despite doubts about his durability.