Raiders RB Marshawn Lynch expected to miss a month following injury

Oakland Raiders running back Marshawn Lynch is expected to miss at least a month due to a groin injury, NFL Network Insider Ian Rapoport reported Friday.

Lynch underwent an MRI exam earlier this week. The Raiders may place the 32-year-old on injured reserve.

Lynch was injured during last Sunday's loss to the Seattle Seahawks.

Lynch has rushed for 376 yards and three touchdowns this season.

Doug Martin will receive a heavier workload in Lynch's absence. He has rushed for 99 yards on 27 carries.

The Raiders (1-5) have a bye this week.

(With inputs from agencies.)