SAN FRANCISCO -- Doug Martin, the former All-Pro running back for the Oakland Raiders and Tampa Bay Buccaneers, has died, his family said in a statement Sunday. He was 36. "It is with great sadness to inform you all that Doug Martin passed away Saturday morning," the family statement said, according to the Tampa Bay Times. Oakland Raiders running back Doug Martin (22) during an an NFL preseason football game against the Arizona Cardinals, Thursday, Aug. 15, 2019, in Glendale, Ariz.