"Scouting reports don't give Raiders quarterback Carson Palmer high marks for mobility.

Yet in the locker room, he flits about like Michael Vick.

One moment Palmer is answering questions from the media and fielding some good-natured barbs from teammate Khalif Barnes for drawing a crowd in front of his locker, never mind that he had already fulfilled his weekly obligation at the podium.

A short time later, Palmer is in an animated conversation with running back Michael Bush before checking in with tight end Kevin Boss. Next up is wide receiver Denarius Moore, whom Palmer has made a project of sorts.

Immersing himself in a new offensive system was only part of Palmer's mission once he was acquired by trade from the Cincinnati Bengals on Oct. 18.

It was also crucial for Palmer to quickly seize a leadership role that Jason Campbell had worked hard to fill after the 2010 season. Palmer makes the 100th start of his career Sunday in Minnesota having accomplished that and more.

"Whoever is calling plays in the huddle is who you're naturally going to look to, and Jason did a great job," Palmer said. "He came in and led this team to a very fast start and played very well. You don't want to come in and step on anyone's toes, but if you're the quarterback, there's a certain aspect of the leadership role you have to take on."