ORCHARD PARK, N.Y. -- After sitting out Wednesday's practice for what the team called a "maintenance day," Buffalo Bills wide receiver Percy Harvin is not suited up for Friday night's preseason opener against the Carolina Panthers.

It's not clear if Harvin is dealing with an injury. He is among 11 Bills players who are not in uniform for Friday's game; all others have reported injuries:

Harvin

G Richie Incognito (ankle)

DT Kyle Williams (quad)

DT Stefan Charles (undisclosed)

DL Alex Carrington (shoulder)

RB Fred Jackson (hamstring)

RB Boobie Dixon (calf)

FB John Conner (hamstring)

CB Ross Cockrell (knee)

LB Jimmy Gaines (arm)

TE Chris Manhertz (ribs)