Jon Kitna left for one play when he was sandwiched between Arizona defenders Calais Campbell and O'Brien Schofield. He returned for four more plays, including a 7-yard run on third-and-goal from the 9, and a 2-yard touchdown pass to Jason Witten on fourth down.
The touchdown pass was his last play.
"It was on the throw to Jason for the touchdown is when I felt it," Kitna said.
He was in obvious pain, grimacing as he threw the ball on the sideline. Kitna went to the locker room, but even a pain-killing shot didn't help.
"It was more than sore," Kitna said. "Injured I guess. You just can't do any athletic movements and things you have to do at quarterback, anything that requires any torque."
Kitna said he strained the oblique muscles in his left side. It is his first career pulled muscle.
His status for next week's season finale against the Eagles is in doubt. Starter Tony Romo went on injured reserve Tuesday with a broken left clavicle.
The Cowboys could need to pick up a quarterback this week with third-stringer Stephen McGee as the only healthy quarterback left standing.
"We'll just wait and see," Kitna said. "It's a muscle thing, so you've just got to kind of see how it responds."
-- Charean Williams