Bills cornerback E.J. Gaines' knee injury is still being evaluated, coach Sean McDermott said Monday. He said the Bills don't expect to have much information for a few more days on Gaines' status. Gaines was carted to the locker room during Sunday's game against the Miami Dolphins. Backup quarterback Nathan Peterman is out of the league-mandated concussion protocol and should be able to return to practice fully this week.