Redskins' Jones out rest of preseason with shoulder injury

ASHBURN, Va. (AP) Washington Redskins running back Matt Jones will miss the rest of the preseason with a left shoulder injury.

Coach Jay Gruden says Jones will be held out of the Redskins' final two preseason games after separating his shoulder Friday against the New York Jets. Gruden has ''high hopes'' Jones will be ready by the regular-season opener Sept. 12 against the Pittsburgh Steelers.

With Jones out, Gruden says rookies Robert Kelley and Keith Marshall, second-year player Mack Brown and third-down back Chris Thompson will share the carries. Kelley replaced Jones as the top back against New York and could start Friday in the third preseason game against the Buffalo Bills.

Jones and Thompson are the only Washington running backs with NFL game experience.