Schilens will be evaluated by the Raiders on a week-by-week basis

By Anthony Caruso III

The Oakland Raiders will have to evaluate Chaz Schilens on a week-to-week basis.

Schilens sprained his knee in the Raiders pre-season opener. Schilens was limping off of the field on Thursday night against the Arizona Cardinals.

"You get a player, right now, with no offseason, no training, all of a sudden a guy gets hurt, it takes a little bit to get a guy back, and we're going to be cautious," Jackson said. "We're going to be cautious in getting people back, so we'll take our time, and we'll get him back and we'll be ready to go."

Schilens had participated in every Raider practice in training camp leading up to the pre-season opener.