"It looks like the game Sunday will be a battle of the back-up quarterbacks.

Michael Vick is taking all the reps with the Eagles first offensive unit Wednesday and Thursday while starter Kevin Kolb tries to pass the necessary post-concussion tests.

"We are taking it day by day," Eagles coach Andy Reid said. "Kevin's not practicing (Wednesday) and probably not tomorrow. Michael will take all the reps for the next few days."

As for Lions' quarterback Matthew Stafford, he walked onto the practice field Wednesday morning and one of the Lions' staffers asked if he was ready to play.

"Sure," he said, and then made a throwing motion with his left arm.

Stafford, who suffered a second-degree separation in his right shoulder Sunday, didn't practice. But it seemed somewhat encouraging that he was on the field and not wearing a sling or any kind of immobilizing device."