Buccaneers running back Doug Martin is believed to have torn his labrum and could be out for the season, reports FOX Sports' Mike Garafolo.

Martin injured his shoulder against the Falcons after taking a hit from safety William Moore.

Martin told reporters afterward that he didn't believe he separated his shoulder. Of course, a torn labrum would be a worse injury.

This only adds to the chaos that's surrounded the Buccaneers all season.

With Martin sidelined, backup running back Mike James will step into first-team duty.

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Aaron Wilson covers the Ravens for The Baltimore Sun.