The Eagles are asking linebacker Casey Matthews to return to the nickel defense this week when they travel to Miami to face the Dolphins. "We've got a few different personnel groups," Philadelphia coach Andy Reid said. "We're going to try to utilize everybody, really. Casey earned the right to get back in there. He's done well when given the opportunity on short yardage and goal line. He's done well on the scout team and he's done well in the classroom. "Like some of the other guys who took a step back to take a step forward, that's what we're doing with Casey." Matthews, a rookie fourth-round draft pick out of Oregon, was thrust into the role of starting middle linebacker when training camp opened in late July. He started all four preseason games and the first two regular-season games.