Josh Freeman

Colts QB Andrew Luck in concussion protocol

The Indianapolis Colts' second straight win may have cost them quarterback Andrew Luck.

Luck entered the concussion protocol after complaining about concussion-like symptoms following Sunday's 24-17 victory over Tennessee. Coach Chuck Pagano said Monday he believes the injury concussion occurred in the fourth quarter, but couldn't cite which play Luck was injured on.

The surprising news came a little more than 24 hours after Pagano told reporters the Colts had no significant injuries from the game. Indy (5-5) hosts Pittsburgh on Thanksgiving night, leaving little time for Luck to recover. If he can't play the Colts will likely go with backup Scott Tolzien, who hasn't...