Carlson leaped to avoid a defender while making a 14-yard reception in the first quarter. Safety Danieal Manning hit Carlson in the legs. Carlson tumbled and landed on his face. Medical personnel loaded Carlson onto a stretcher and removed him from the field on a motorized cart.
Carlson's absence leaves Seattle with Cameron Morrah as its primary tight end. Morrah is more receiver than in-line blocker.