Commanders get concerning injury news on player who's quietly dominated

Washington Commanders defensive end Dorance Armstrong Jr. | Michael Owens/GettyImagesIt's no secret that the Washington Commanders have dealt with some devastating injury problems through the first six weeks of the campaign. It's been one complication after another, and head coach Dan Quinn has yet another headache to deal with heading into a bitter division showdown against the Dallas Cowboys.

There is anxiousness among the fan base regarding the status of Dorance Armstrong Jr. The defensive end, who's in the midst of a breakout campaign, dipped in and out of Washington's loss to the Chicago Bears with a hamstring injury. This is a short week, so it'll be a race against time to prove his…