Raiders running back Darren McFadden was taking reps in practice and looking as if he'll be ready to play Thursday against the Dallas Cowboys. The question is how much McFadden will play based on the production of Rashad Jennings in his absence. McFadden sustained his latest hamstring injury on Nov. 3 early in a 49-20 loss to the Philadelphia Eagles, missing most of that game and the three games that followed. During those four games, Jennings has 413 yards on 73 carries, averaging 5.7 yards per attempt with two touchdowns. He's also caught 15 passes for 140 yards. Jennings' 553 yards from scrimmage over those four games is the most in the NFL. With a season rushing total also of 553 yards, Jennings is the Raiders' leading rusher. McFadden had 352 yards rushing and was averaging 3.6 yards per attempt at the time of his injury. Raiders coach Dennis Allen said if McFadden is "fully healthy," both backs would play, but it doesn't sound as if Jennings is taking a back seat to anyone. "You can't deny Rashad Jennings over the last month of the season has led the NFL in yards from scrimmage," Allen said. "I think he's earned the right and deserves the right to continue to get his carries and touches and we'll still do that." McFadden has missed 37 of a possible 91 games due to injury since coming to the Raiders in 2008. Hamstring issues have cost him four games this season and much of two others. "There's always something," McFadden said. "To me, like it's something small, like an ankle, a hamstring, or turf toe or something. You try to stay positive and keeping working hard and moving forward." McFadden is in the last year of his original contract after being a first-round draft pick and will be eligible for unrestricted free agency in the offseason.