Peterson impresses Jay Gruden in Redskins debut

Veteran running back Adrian Peterson excited fans in his Washington Redskins debut Friday, accumulating 56 yards on 11 carries while displaying his violent running style against the Broncos.

Redskins head coach Jay Gruden liked what he saw from the former All-Pro rusher.

"I saw a big guy running pretty hard, really," Gruden told reporters after the game, according to Pro Football Talk's Mike Florio. "He had a five-yard average I believe, had a couple good bounces, and, you know, the thing I like about some of his runs is they look like they're like gains of ones and he'd fall forward for a gain of three. The first run of the day I thought it was a three-yard gain and he ends up second and three ... I was impressed with Adrian and the way he ran."

Still, Gruden is undecided on whether to play Peterson in his team's fourth preseason contest versus the Ravens on Thursday.

"We'll see," he said. "I'm going to check out the tape and see how he's feeling body wise and we'll go from there. I think Samaje (Perine) should be OK by Thursday. We'll get some good looks at them and we've got some other guys to look at."