ALAMEDA, Calif. -- Oakland Raiders quarterback Jason Campbell's injured left knee is improving, and he is expected to be able to start this weekend against the Denver Broncos if he doesn't have any setbacks.
Bruce Gradkowski's injured right shoulder is improving, but Cable said it is "very questionable" if the regular starter can play this week,
In other injury news, Cable said running backs Darren McFadden and Michael Bennett are likely to play after missing last week's game with hamstring injuries.
Safeties Tyvon Branch and Hiram Eugene are questionable with sore backs. Backup tight end Brandon Myers is questionable with a concussion.
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