Share this: Andrew Luck’s status for the Indianapolis Colts’ Week 12 game against the Pittsburgh Steelers on Thanksgiving night is up in the air. The Colts quarterback is undergoing concussion tests, Indy head coach Chuck Pagano announced Monday. Scott Tolzien is the Colts’ backup quarterback. He has not thrown a pass in 2016. Colts HC Chuck Pagano: Andrew Luck and Clayton Geathers dealing with concussion protocol. — Mike Chappell (@mchappell51) November 21, 2016 Pagano: Luck and Geathers felt fine during game. Both had issues later in night. — Mike Chappell (@mchappell51) November 21, 2016 The Colts would be in deep trouble without Luck, who’s thrown for 2,827 yards with 19 touchdowns and eight interceptions despite having one of the worst offensive lines in the NFL. Indy went 8-8