NAPA – Javon Walker smiled and chatted up himself and his role entering in his first year with the Raiders.

But he's not talking about being robbed, beaten and left unconscious on a Las Vegas street last month.

"I ain't talking about that," Walker said when asked about his reported injuries, including fractures to his jaw and orbital bone, listed in a police report.

Walker claimed ignorance when speaking about the injuries.

"Y'all telling me something new for the first time," Walker said. " … I haven't really seen nothing about it. I just let everybody go into speculations of what they heard and what they think they know, (so) when I get ready to come out and tell what really happened, I'll clear it up then."

Walker, a former Denver Bronco, signed a six-year deal worth up to $55 million in the offseason. He received $11 million up front to be JaMarcus Russell's top receiver.

Then came the June 16 robbery, which resulted in the arrest of two men, who are being held in Las Vegas.

Walker and the Raiders said there are no ill effects from the beating, and Walker said "it's too soon" to clear up what really happened.

Walker took part in the first practice of training camp Thursday, and in one important person's opinion, the new addition, wearing jersey No. 17, looked good.

"Like he hasn't missed a beat," Russell said. "I hate (what) happened to him but at the same time I wish him the best. … He had some good catches today. We'll work from there."

But Walker's value won't be assessed in a day's practice. It will be about his ability to return to an elite level after missing eight games with a knee injury in 2007.

Not that Walker is worried about any added pressure.

In fact, he seems to like it, even if the extra attention is because of what happened in Las Vegas.

"People that already got a different spotlight of me, it's based on really what I've done in football," said Walker, who is entering his seventh season.

"But if people want a real (perspective) of me, just tell them to go look at my record. I don't have a record. I don't have a rap sheet."

If there is a knock on Walker's character, he admits it's from being outspoken.

That was the case after his Pro Bowl season of 2004 with Green Bay, when Walker was vocal about wanting a new contract or a new team.

Walker was eventually traded to Denver before the 2006 season. By the end of the 2007 season, he wanted out.

"You don't hear about Javon Walker getting arrested," he said. "People's light of me is like, he just leaves different teams because he's not happy. Well, like any other American, that's my right if I don't like a job, that's people's perspective of me.

"But, outside the field, I mean, you talk to people anywhere around this country, they say I'm the nicest person off the field."

Walker said he's about 15 pounds lighter than he was at the start of organized team activities.

Raiders coach Lane Kiffin said he wanted Walker to lose weight during OTAs. Walker is being limited to one practice a day, though he says his problematic right knee (he tore his ACL in 2005) is fine.

Nevertheless, the Raiders will take it slow with Walker.

"I don't know that he's 100 percent," Kiffin said. "The altercation has nothing to do with anything. You still watch him. I don't think he's 100 percent. … I think he'll continue to improve."

Read Jason Jones' Raiders blog at www.sacbee.com/blogs.