straight from Gruden's press conference:
“We feel like Dan still has some lingering effects from his preseason injury in his ankle. You can vividly see it on the practice tape. Until that injury resolves itself, we’re going with Mahan because he’s a pretty good player and he’s injury-free.”
though I think he cringed a bit when he called Mahan a good player
Yeah, and he looked like he was gonna vomit when he had to say Mahan was a "pretty good player". Beunning is Definitely injured.