Doug Martin, an All-Pro running back for the Tampa Bay Buccaneers, has died at the age of 36.

Martin died today, his family confirmed.

“It is with great sadness to inform you all that Doug Martin passed away Saturday morning. Cause of death is currently unconfirmed. Please respect our privacy at this time,” Martin’s family said in a statement, via Rick Stroud of the Tampa Bay Times .

Martin was a star at Boise State, where he earned the nickname “Muscle Hamster” because he was incredibly powerful despite standing just 5-foot-9. After his college career, the Buccaneers selected him in the first round of the 2012 NFL draft.

As a rookie, Martin made an immediate impact: He went over 100 yards from scrimmage in his first game, and in the eighth game of his rookie season he turned in an a

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