The Oakland Raiders have been looking in free agency for running backs who could provide depth on the roster. They may have found what they were searching for in Mack Brown.

Oakland announced on Saturday that it has signed veteran running back Mack Brown, who will compete for a roster spot on the Raiders along with a few other players at his position.

Currently, the Raiders are expected to utilize Josh Jacobs and Jalen Richard in their backfield. Behind them, Doug Martin, DeAndre Washington, and James Butler are fighting for roles on the team.

Now, you can add Brown into the mix with those guys. Brown is entering his fifth season in the NFL after failing to stick with any team so far in his career.

In 2015, Brown began his career with the Houston Texans before being cut in training camp. Following his release, he was picked up by the Washington Redskins. While in Washington, he went back and forth from the practice squad to being released.

After two seasons with the team, Brown was released by the Redskins and was claimed off of waivers by the Minnesota Vikings. His stint with the Vikings was short-lived as he was placed on the waived/injured list and was later placed on injured reserve.

After his release from the Vikings, Brown found himself going back to the Redskins as he signed onto the practice squad. But yet again, Brown was released from the team at the end of the 2018 season.

Jon Gruden loves tough football players and if Brown can show his worth in training camp, he could find himself being a contributor on the team. We'll see all of this play out on HBO's Hard Knocks when the acclaimed documentary series debuts next week.