Raiders QB Jimmy Garoppolo in concussion protocol

(Photo credit: Stephen R. Sylvanie-USA TODAY Sports)
Las Vegas Raiders quarterback Jimmy Garoppolo is in concussion protocol, coach Josh McDaniels confirmed Monday.

Garoppolo was sacked four times but played every snap in Sunday night's 23-18 home loss to the Pittsburgh Steelers.

It is unclear when the injury occurred to Garoppolo, who was never checked during the game and finished with 324 yards, two touchdowns and thr