Source: Raiders QB done for season

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OAKLAND, Calif. -- Oakland Raiders quarterback Jason Campbell broke his right collarbone in the second quarter against the Cleveland Browns on Sunday.
Campbell landed hard on his shoulder after being hit at the end of a scramble by Cleveland linebackers Chris Gocong and Scott Fujita with about 4 minutes remaining in the half. Campbell stayed down on the turf after the hit and was then helped to the locker room.
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Jason Campbell will be out for some time. That much is clear. The Raiders' quarterback situation? Well, that's a little cloudier, writes Bill Williamson. Blog
Tests determined that he broke his collarbone.
"I'm not going to let this football team blink," coach Hue Jackson said after a 24-17 victory. "We'll miss Jason for a little while. I have no idea how long it will take. I don't know. We'll see as we go. I know, obviously, he won't be here next week or anything like that. We'll continue to press forward and get better."
A source told ESPN.com's Bill Williamson that Campbell is expected to be out for the remainder of the season.
Campbell was replaced by Kyle Boller, who went 8 for 14 for 100 yards in his first action of the season.
"I felt very comfortable," Boller said. "I probably was a little bit quick in the beginning. Wish I could slow my feet down a little bit, but that's part of it. I felt like in the second half I got more comfortable each play, and even in the last couple drives it felt good."
The Raiders had no other active quarterbacks on the roster Sunday with punter Shane Lechler serving as the emergency QB.
Lechler threw for the team's only passing touchdown, connecting with tight end Kevin Boss on a fake punt for a 35-yard score.
The only other quarterback on Oakland's roster is rookie Terrelle Pryor, who will be activated Monday. Pryor got a one-week roster exemption after serving a five-game suspension to start his career.
A source familiar with the team's thinking told Yahoo! Sports on Sunday that the Raiders were "trying hard" to land quasi-retired Cincinnati Bengals quarterback Carson Palmer. However, the source also told Yahoo! that it was doubtful Bengals owner Mike Brown would trade Palmer. Brown has been staunch in his public belief that Palmer has retired from the NFL and has said on multiple occasions he has no plans to deal the disgruntled signal-caller.
Campbell has completed 60.6 percent of his passes for 1,170 yards with six touchdowns and four interceptions this season. Campbell is in the final year of his contract.
Information from The Associated Press was used in this report.
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