ALAMEDA, Calif. — The Oakland Raiders re-signed defensive tackle William Joseph on Thursday while Richard Seymour remained a no-show four days before the team's season opener.

Joseph was cut by the Raiders on Sunday after the team acquired Seymour from New England in exchange for its first-round draft pick in 2011.

But Seymour remains a no-show four days after the trade and there has been no official comment from either him or his agent, Eugene Parker, as to why.

Raiders coach Tom Cable declined comment about reports Seymour and the Raiders were working on a new contract, but said he had spoken with Seymour and that the player confirmed he wanted to be in Oakland.

The Raiders didn't immediately announce a corresponding move to the Joseph signing.

Oakland was holding a night practice and Cable wasn't available for comment.

Trevor Scott, who tied for the Raiders lead in sacks as a rookie in 2008, will likely start at right defensive end against the Chargers if Seymour does not show up.

"It's out of my control, whatever's going to happen is going to happen," Scott said. "So if he does get here, some things are changed or different. I'm not going to let it affect me."

San Diego coach Norv Turner, whose teams travels to Oakland for Monday's season opener, said Seymour could still have an impact in the game if he reports soon.

"He's an outstanding football player," Turner said in a conference call Thursday. "A guy who's that good a football player, I think you find a spot, whether it be as an end pass rushing on third down, whatever those things might be. But certainly, it's hard to fit a guy in and get him going in a short period of time."

Chargers running back LaDainian Tomlinson, who has rushed for more yards (1,906) and touchdowns (19) against the Raiders than any other team, also expects Seymour to play well if he reports.

"He's a pro for one, he knows how to play football and he knows how to turn it on when it's time to turn it on," Tomlinson said. "I think he can absolutely have an effect on the game."

Joseph, a former first-round pick of the New York Giants who played in eight games for Oakland last season before being released on Sunday, wasn't surprised the Raiders re-signed him.

"The day they let me go, they released me, coach Cable said, 'Don't go nowhere,'" Joseph said. "I was just around, sticking around, seeing what was going to happen."