Wingard (knee) was a limited participant at practice Wednesday, Darren Urban of the Cardinals' official site reports.
Wingard has been sidelined for the Cardinals' past three games due to a bone bruise in his knee he sustained back in Week 4 against the Giants, and now his availability for Week 8 is in question. If he can upgrade to full participation at practice Thursday or Friday, there's a good chance he'll suit up Sunday at Dallas.