Harnessing that exuberance could be as big a challenge for the excitable Mitchell while trying to slow down the New Orleans Saints' second-ranked passing attack.
"He's a passionate player, he works extremely hard (and) he loves the game," Allen said of Mitchell. "Sometimes you have to slow his heartbeat down a little bit and get him to calm down a little bit. It's important to him and that's what I like about him."
Oakland will also be without seven-time Pro Bowl defensive tackle Richard Seymour (knee, hamstring) for the second consecutive game.
That doesn't bode well for a team that has given up 97 points in its past two games. The Raiders have allowed 31 points or more in five games overall this season, four of them losses.
The Saints are averaging 27.8 points over their previous five games.
Injuries are also taking a toll on the Raiders offense.
Running backs Darren McFadden and Mike Goodson are both out with foot injuries, while wide receiver Darrius Heyward-Bey is questionable with a hamstring injury.
Heyward-Bey led the Raiders in receptions and receiving yardage in 2011 but has only 24 catches through nine games this season.
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