Chancellor was questionable with a strained hip, while McClain was questionable with a groin injury. Chancellor did not participate in the final two days of practice this week, but went through a pregame workout about 90 minutes before kickoff and appeared to be moving without limitations. McClain missed two days of practice this week.
Seattle will be without starting center Max Unger due to a foot injury. Unger was doubtful after injuring his foot late in last Monday's win over Washington. Stephen Schilling will start in his place.
Dallas will be without linebacker Bruce Carter, who was already ruled out with a thigh injury.
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