DENVER (AP) Broncos receiver Wes Welker left Sunday's game against Tennessee before halftime with a concussion.
Welker went low to try to make a catch late in the second quarter and Titans safety Bernard Pollard hit him in the helmet as he went down to break up the pass.
Welker had caught five passes for 61 yards and a touchdown before he got injured.
He walked off the field under his own power but did not come back after halftime. It is his second concussion in four weeks. He left the Nov. 17 game against Kansas City but played the next week.