Although Dangerfield has a mere two inches and 25 pounds on Willis, the hit rocked the 5'9", 175-pound rookie. Willis was carted off the field shortly after.
According to Vic Carucci of the Buffalo News, Willis suffered a head injury.
Vic Carucci @viccarucci
Austin Willis head injury, out for the game. #Bills2015-8-29 22:38:14