Sam Bradford listed as inactive against Pittsburgh

MINNEAPOLIS, MN: Sam Bradford #8 of the Minnesota Vikings passes the ball in the third quarter of the game against the New Orleans Saints on September 11, 2017. (Photo by Hannah Foslien/Getty Images)

Sam Bradford was listed as inactive for Sunday's game against the Pittsburgh Steelers with a knee injury, leaving a hole under center just as the Vikings' season was heating up.

The announcement came just after Bradford was spotted on the field throwing a few passes before the game, though he headed back to the locker room after just a few minutes.

The Vikings announced a few days ago that Bradford's start would be a game time decision after he suffered a left knee injury earlier in the week. The injury is to the same knee he's had two ACL surgeries on, most recently in 2014.