Tony Romo could be game-time call

IRVING, Texas -- Tony Romo is missing his third straight day of practice with a back injury and will have to be able to move around better before Sunday's game against the Arizona Cardinals in order to be able to play.

"We've still got about 48 hours to the game," coach Jason Garrett said, "so we're going to give him every chance."

Garrett said the Cowboys do not need to know before Sunday whether Romo can play. They have a short walkthrough on Saturday. Romo has been receiving treatment on his back all week but has not done any football activities.

Owner and general manager Jerry Jones said on 105.3 The Fan in Dallas that Romo is "moving around, and he's doing a little stuff in the back there to get the stiffness out, kind of like a bicycle-type thing. He's moving around, been in the meetings today."

If Romo can't play, Brandon Weeden would start and undrafted free agent Dustin Vaughan would be the backup.

Left guard Ronald Leary is missing his third straight day of practice, as well, with a groin injury. Garrett said Leary took part in Friday's walkthrough. It is possible Leary could be active but not start. Mackenzy Bernadeau would start.

Linebacker Bruce Carter, who broke his left ring finger in Thursday's practice, is taking part in Friday's session, as is Rolando McClain, who missed Wednesday's practice. Defensive end Jeremy Mincey is sick and not practicing on Friday.