Bills cornerback Christian Benford underwent aconcussiondiagnosis but remained active during the divisional round. However, he sustained another concussion late in the AFC Championship Game, ending his 12-play streak. In the first quarter, with 2:58 remaining, Benford collided with Chiefs tight end Xavier Worthy after an 8-yard run and was carted off the field after teammate Rasul Douglas intervened. Benford recorded three tackles and a pass defensed in the game as the Chiefs led 7-3 following the injury.
Source: https://www.nbcsports.com/nfl/profootballtalk/rumor-mill/news/christian-benford-leaves-after-12-plays-with-another-concussion