ALAMEDA, Calif. -- Oakland Raiders quarterback Jason Campbell is practicing again. Whether he'll play in Thursday's preseason finale is uncertain.

Campbell worked out Monday for the first time since being carted off the field during a preseason loss to San Francisco on Saturday. He appeared fine during a light 90-minute workout Monday in no pads and showed no lingering effects from the stinger he suffered after being hit by 49ers linebacker Travis LaBoy in the second quarter. Campbell's right wrist, which he injured on the previous series and was more of a concern for the Raiders, also appeared fine.

"He did everything we need to do in practice," Oakland coach Tom Cable said. "I knew after the game that he would be all right, so it was just a matter of him going back to work."

Cable's optimistic viewpoint was in stark contrast to Saturday, when the team and its fans held their collective breath after Campbell went down. He remained prone on the turf for five minutes before being helped to his feet and being placed in a cart.

The 28-year-old, acquired from Washington in the offseason to replace JaMarcus Russell as Oakland's starting quarterback, underwent an MRI test on his wrist Sunday. He will likely get checked out again later this week before the Raiders determine if he'll play against the Seattle Seahawks on Thursday night.

"Don't know that yet and it has nothing to do with injuries," Cable said. "It has to do with what we're going to do with our team. We're not going to get into it but there's no real [injury] issue there to be worried about."