Colts QB Andrew Luck in concussion protocol (Yahoo Sports)

Indianapolis Colts quarterback Andrew Luck is in the NFL's concussion protocol after complaining of concussion-like symptoms after a victory Sunday over Tennessee. Coach Chuck Pagano says Monday he believes Luck's concussion occurred in the fourth quarter of the 24-17 win. The Colts (5-5) host Pittsburgh on Thanksgiving night, leaving little time for Luck to recover.