"Bruce Gradkowski missed his seventh straight practice Wednesday, so Jason Campbell's temporary hold on the starting quarterback spot appears safe for at least one more game.
Gradkowski's right (throwing) shoulder strain is healing, but not to the point where he can play, Raiders coach Tom Cable said.
Cable said he will decide later this week who will start against the Seattle Seahawks on Sunday. On Monday, Cable said Gradkowski is the starter once he returns from his injury.
In the interim, the Raiders are riding high on Campbell after his career-best 127.9 passer rating in a 59-14 victory over the Denver Broncos on Sunday. Cable attributed Campbell's success one game after he recorded a career-worst 10.7 passer rating to playing without fear of failure. Campbell agreed.
"It keeps you from pressing," Campbell said. "You're not pressing so much to make every play and make every throw. You're just playing your game."
Starting wide receiver Louis Murphy is doubtful for Sunday's game because of a bruised chest. Cable said it might take Murphy a couple weeks to recover. Jacoby Ford is likely to make his first NFL start.
Ford's first NFL reception came against the Broncos, a 12-yarder for a first down late in the first quarter that kept alive a scoring drive.
Ford also gained 23 yards on an end around early in the second quarter and finished with two receptions for 15 yards."