Welker was leveled by Swearinger soon after catching a short pass over the middle late in the second quarter. Swearinger drew an unnecessary roughness penalty for the hit on Welker, who has a history of concussions and wears a bigger helmet to further protect his head.
Broncos quarterback Peyton Manning gave Swearinger an earful after throwing a 29-yard TD pass to Emmanuel Sanders. Manning ran down the field and muttered something to Swearinger, which earned the QB a taunting penalty.
Welker missed the final 3½ games last season after sustaining his second concussion in a three-week span.