Ryan Mathews injury: Eagles running back suffers concussion in Dolphins game

Philadelphia Eagles running back Ryan Mathews suffered a concussion in the third quarter of the Eagles game against the Dolphins, and will not return. DeMarco Murray and Darren Sproles will handle the running back duties for the remainder of the game.

Mathews has had a strong season, rushing 67 times for 409 yards and four touchdowns. On Sunday, Mathews finished the game against the Dolphins with eight carries for 18 yards and a touchdown, as well as three receptions for 22 yards.

This is not Mathews' first concussion in the pros. As a member of the Chargers in 2013, Mathews suffered a concussion against the Oakland Raiders, but was cleared to play the following week. He also suffered a concussion in 2009 while playing at Fresno State.

Mathews was signed by the Eagles in the offseason, but did come with the "injury prone" label. In addition to his previous concussions, the former Charger has missed time with a litany of injuries that include a season-ending clavicle injury in 2012.