Vikings' Harrison Smith, tight end Kyle Rudolph leave with concussions
"Probably learn more regarding them (Monday)," coach Leslie Frazier said after the game.
Smith was injured while knocking Chicago receiver Earl Bennett out of bounds on a play early in the third quarter. The team initially announced Smith's return as questionable but downgraded him to out a short time later.
Teammates immediately called team doctors onto the field. Smith left under his own power and appeared to be trying to flex his neck on the bench before heading to the locker room for evaluation.
Rudolph left in the fourth quarter and also went to the locker room for evaluation. It was unclear on what play he was injured.