Left guard Derrick Dockery has an MCL sprain in his knee and a fractured tibia. He declared himself out this week but "week to week" after that. The reality is: He likely will miss several weeks. That puts rookie Bill Nagy back in the starting lineup for this week and for the immediate future.
Dockery was injured in the third quarter against the 49ers when he was rolled from behind. He stayed in the game not knowing the severity of the injury.
"It's disappointing," Dockery said. "You want to be out there so bad. I was doing extra things to improve my game on the field. It's disappointing, but I'm in good spirits. I'll watch extra film and be ready when it's time to come back."
Dockery, a third-round pick of the Redskins in 2003, made his 112th career start last week against the 49ers. He did not play in the season opener, a week after being signed by the Cowboys. Nagy, a seventh-round pick, started against the Jets and played all 70 plays. But he strained his neck in the team's Sept. 14 practice. He returned to practice Thursday and is expected to start Monday.
"Bill will do just fine; he'll do great," Dockery said. "He's smart, plays very hard. He just has to watch film. I'm going to do as much as I can to help him."
Rookie David Arkin is the only backup at guard, with rookie Kevin Kowalski taking snaps at center in place of injured starter Phil Costa (knee). Kowalski can play guard or center, though he has worked mostly at center during practice the past three weeks because of Costa's injury.
-- Charean Williams