According to NFL Media Insider Ian Rapoport, Packers defensive lineman B.J. Raji suffered a torn biceps muscle on Friday night against the Raiders.
The belief is that #Packers NT BJ Raji tore his bicep last night, sources say. Tests will show whether it's fully or partially torn.
— Ian Rapoport (@RapSheet) August 23, 2014
Losing Raji for an extended period of time or for the season will hurt Green Bay.
Update: Raji is done for the season.