Arizona Cardinals quarterback John Skelton is listed as doubtful for Sunday's contest against the New England Patriots.

Skelton suffered an ankle injury in the fourth quarter of Sunday's season- opening victory over the Seattle Seahawks. He had to be carted off the field and Kevin Kolb led the team on a game-winning drive.

Skelton was the only member of the Cardinals to not participate in practice, while cornerback Patrick Peterson (groin) and safeties Rashad Johnson (thigh) and Adrian Wilson (ankle) were limited on Friday and are listed as questionable.

Running backs Beanie Wells (knee) and Ryan Williams (knee) both participated fully in Friday's session and are probable for Sunday.