ALAMEDA -- The Raiders began preparations Wednesday to face the Washington Redskins with Matt Flynn as the starting quarterback.

Terrelle Pryor, who left a 37-21 loss to the Denver Broncos with a concussion, was not on the field and presumably has not passed the NFL mandated protocol for concussion victims.

Two other recent concussion victims, Sio Moore and Tracy Porter, were on the field and practicing.

Pryor will be eligible to practice once he completes the tests and is cleared by doctors, which could still happen this week.

According to a story reported by Fox Sports and ESPN, the Raiders handling of the Pryor concussion will be examined by the NFLPA. Pryor remained on the field for two plays after taking a blow to the head by Denver linebacker Wesley Woodyard.

NFLPA director of communications Carl Francis declined comment regarding the Raiders' handling of Pryor, but did say in an e-mail, ``We routinely monitor and review concussion cases throughout the season. Every concussion is important to the health and safety of our membership. We take all player concussions seriously.''

Redskins coach Mike Shanahan, asked by conference call about preparing for quarterbacks with different styles, said, ``You have to prepare for both of the. That's their game plan.''

Should Pryor be unavailable, Raiders free safety Charles Woodson said Monday night it would be unfortunate considering the quarterback's progress through the first three weeks.


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"It'd be a big blow. It's a guy that's getting his chance, and I think with each week he's getting a little bit more comfortable," Woodson said. "He did some good things tonight. So it'd be a tough blow especially for him and his development as a player if he's not able to bounce back and come back next week. We'll just see how that pans out."

Defensive end Jason Hunter was also a spectator at practice with an as yet undisclosed injury.

For more on the Raiders, visit the Inside the Oakland Raiders blog at ibabuzz.com/oaklandraiders. Follow Jerry McDonald on Twitter at twitter.com/Jerrymcd.