NAPA -- Raiders rookie running back Latavius Murray underwent arthroscopic surgery on his ankle, according to coach Dennis Allen on Wednesday.

Murray showed up on the injury report right after the Raiders played the Dallas Cowboys in an exhibition game Aug. 9. Therefore, Murray presumably suffered his injury in that game.

The Raiders selected Murray in the sixth round of the NFL draft in April. He is competing against veteran Rashad Jennings and Jeremy Stewart, among others, for the primary backup spot to Darren McFadden.

Allen didn't offer any specifics on Murray's rehab. However, it's likely that Murray won't play again before the regular season starts Sept. 8.

For now, the Raiders have to decide whether to keep Murray on the 53-man roster, cut him or place him on injured-reserve.

The most likely scenario involves the Raiders keeping Murray on the 53-man roster, especially if the Raiders place offensive tackle Jared Veldheer on injured reserve/designated to return, so that they can use him at some point this season.

Teams are permitted to use the I.R./designated to return once per season. If the Raiders cut Murray on the final cutdown day Aug. 31, other teams would have 24 hours to claim Murray on waivers before the Raiders could sign Murray to their practice squad.

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