Brown was held out of Thursday's practice with a groin injury he suffered a day earlier. He's listed as doubtful on the Raiders injury report and interim head coach Tom Cable didn't sound too optimistic about Brown playing against the Falcons.
"I would say right now we'll see if he can do anything tomorrow," Cable said. "But right now it's a doubtful (status)."
Brown has started all seven games for Oakland this season and is fifth on the team with 37 tackles. He beat out Robert Thomas for the starting job in training camp and has been a productive player both on defense and special teams.
Thomas, who re-signed with Oakland after the team placed fullback Justin Griffith on waivers earlier this week, is the likely replacement for Brown.
Strong safety Gibril Wilson was also held out of practice Thursday with a toe injury, though Cable said he expects Wilson to play against the Falcons. If Wilson is unable to practice, Cable said the team will start rookie Tyvon Branch instead of Michael Huff, the recently demoted free safety.
Huff was limited in practice due to a thumb injury -- there's speculation he could have torn ligaments -- but Cable did not expound on the situation.
In addition, linebacker Jon Alston (foot) did not work out while backup quarterback Andrew Walter (calf) was also limited. Cornerback DeAngelo Hall was given the day off.
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