Derek Carr sprained his right AC joint and is considered week-to-week, according to the New Orleans Saints.

Dennis Allen did not rule Carr out for Sunday's game against the Tampa Bay Buccaneers, but the team will be cautious with the quarterback and it would be a surprise if he played in Week 4, according to sources.

Jameis Winston is the No. 2 quarterback behind Carr.

"We're not making any decisions today; we're not ruling anything out," Allen said Monday. "We'll see where he's at as the week goes on."

Carr was hurt in the third quarter of the Saints' 18-17 loss to the Green Bay Packers at Lambeau Field on Sunday.