Coach Doug Marrone declined Monday to reveal the severity or nature of the injury. He says Easley is still being evaluated.
Easley was hurt while blocking during a kickoff return in the third quarter of a 22-10 loss to San Diego on Sunday.
Trainers spent several minutes treating Easley on the field. The fifth-year player required help to get to the sideline and was eventually carted off to the locker room.
Buffalo (2-1) plays at Houston (2-1) on Sunday.
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