As expected, Oakland No. 1 receiver Chaz Schilens underwent arthroscopic knee surgery. The Raiders put no timetable on his recovery, but similar surgeries often take 3-4 weeks to recover, so Schilens may have a hard time getting ready for the Sept. 12 season opener at Tennessee. Schilens has been dealing with a foot injury for more than a year.

In the same article, it was reported that center Samson Satele may be out for some time with an ankle problem and rookie Alex Daniels was moved back to the defensive line after spending some time at fullback.

• San Diego running back Ryan Mathews has undergone a procedure to stop nose bleeds, which has been hampering him for some time.

• Kansas City starting right tackle Ryan O'Callaghan departed practice Tuesday with an undisclosed injury.

• You know it’s bad when Javon Walker takes a crack at you. While meeting with media members in Minnesota, the new Viking was the latest to take a jab at former Oakland quarterback JaMarcus Russell. “Like I said, it all boils down to being in the right situation and the right quarterback,” Walker said. “Last year, I was in Oakland. Everybody knows that situation.” Granted, Russell was horrible. But Walker was no better. He had had 15 catches, all in 2008, in two seasons in Oakland.