Bruce Gradkowski has an ailing right shoulder. Jason Campbell is playing the way the Raiders envisioned when they traded for him in April.

So, who is the starting quarterback on Sunday when the Raiders visit the 49ers?

"Bruce would start if he's healthy," coach Tom Cable said Monday.

Healthy being the key word. Gradkowski had an MRI on his shoulder Monday to determine the extent of the injury to his A-C joint. Results won't be released until Wednesday.

For now, Cable is content focusing on the strong play of Campbell, who relieved Gradkowski during a come-from-behind victory over the San Diego Chargers.

Campbell was benched by Cable midway through Oakland's second game of the season for his inconsistent play. There were two options for Campbell: sulk or improve.

Campbell opted for the latter. He watched videos of his performance in the first two games and discovered he wasn't playing the way he did during five seasons with the Washington Redskins.

"I felt like I was putting too much pressure on myself to make plays," Campbell said. "I wasn't playing the way I knew how to play and the way I feel I can play. I said, 'Just be ready when your number is called again.' "

That came late in the first quarter when Gradkowski got tackled from behind by Chargers linebacker Shaun Phillips and reinjured his shoulder.

Campbell completed 13 of 18 passes for 159 yards and one touchdown, without an interception, in helping the Raiders defeat the Chargers 35-27.


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"He managed the game as well as we've seen him, obviously," Cable said. "He played just like you would hoped he would."

Running back Michael Bush said he sensed Campbell's confidence grow as the game progressed.

"He seemed confident in the huddle," Bush said. "He wasn't jittery or nervous. Throughout the course of the game, the more reps he took, the more relaxed he became."

Before Sunday, Campbell said he tried too hard to impress his teammates, coaches and fans. Now he is intent on relying upon his instincts.

"You're on a new team and there are high hopes for you, high hopes for the team to win," Campbell said. "You try to put all that on yourself, you try to make every play and you try to pressure yourself to make every play. When you (don't) make a play, you have to let it go. I just said, 'Forget it. I can't play this way.' I have to play the way I know how and have fun."

  • Strong safety Tyvon Branch is the one shown on highlight shows recovering a fumble by Chargers quarterback Philip Rivers and sprinting down the left sideline for a game-clinching touchdown with less than a minute to play on Sunday.

    However, Branch and his teammates point out that cornerback Chris Johnson deserves the lion's share of the attention. It was Johnson who leveled the Chargers' Randy McMichael, who was about to recover the fumble.

    "It's crazy that I'm getting glory for the play," Branch said. "I had nothing to do with it. I just ran to the ball. (Michael) Huff made a nice play (to cause the fumble), C.J. knocked the ball out again, and I just picked it up and scored."

  • Wide receiver Chaz Schilens' 2010 debut remains uncertain, Cable said. However, he said there is "a great chance" of getting back left guard Robert Gallery, who has missed the past four games with a hamstring injury he suffered against the Tennessee Titans.

  • Defensive tackle John Henderson's stress fracture in his right foot has improved a great deal the past week, he said. He now is out of a protective boot and awaiting word from the trainers on how to proceed.

    "It's day-by-day," Henderson said. "Right now, it feels better since I've been off it for the whole week."

    Cable said Henderson is expected to miss at least one more week and perhaps as many as four.