Lynch will reportedly miss at least one month of the season with a groin injury.
Oakland Raiders RB Marshawn Lynch will reportedly miss at least one month of the season with a groin injury, according to NFL Network's Ian Rapoport.
Lynch had an MRI this week and could possibly be placed on Injured Reserve, reports Rapoport.
At a press conference on Tuesday, Raiders head coach Jon Gruden called Lynch's groin strain a "cause for concern."
Losing Lynch would be the latest blow to the struggling Raiders (1-5), who already have several players dealing with injuries.
Last Sunday, Lynch recorded 45 yards on 13 carries and three catches on for 14 yards in Oakland's 27-3 loss to the Seattle Seahawks in London.
In Lynch's absence, the Raiders would turn to backup RB Doug Martin.