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Dolphins' Miller suffers concussion

Pittsburgh, PA (SportsNetwork.com) - Miami Dolphins running back Lamar Miller left Sunday's game against Pittsburgh with a concussion.

Miller took a hard hit late in the first half and did not return. He had six carries for 20 yards and two catches for 13 yards before exiting.

The Miami-Florida product, in his second season, entered the contest leading the Dolphins with 547 rushing yards.

12/08 15:23:54 ET