Raiders quarterback Terrelle Pryor suffered a concussion late in Monday night’s 37-21 loss to the Denver Broncos at Sports Authority Field. The 24-year old was formally diagnosed by team doctors after the game casting doubt over his future playing status.

Pryor took a vicious hit from middle linebacker Wesley Woodward on a designed run inside the tackles near the end zone. He finished the drive which ended with a turnover on downs at the Denver 1-yard line but did not return.

Backup quarterback Matt Flynn finished the game which was already out of hand.

Pryor must pass a series of concussion-related tests mandated by the NFL before he’s allowed to play or practice. With a short week heading into Sunday’s home game versus Washington his playing status is in serious jeopardy.

“We’ll see” Raiders coach Dennis Allen said. “We will go in tomorrow and have an evaluation. We’ll get a better feel for where we’re at and go from there.”

Pryor did not speak to reporters after the game. Per NFL policy concussed players are barred from talking to the press. His teammates know that losing Pryor for any length of time would hurt because he gives the Raiders a legitimate chance to win.

“It’ll be a big blow” Raiders free safety Charles Woodson said. “It’s a guy who is getting his chance and each week he’s getting more comfortable. Terrelle did some good things so it’ll be a tough blow for him and his development if he’s unable to shake it off and bounce back. We’ll see how that pans out.”

Cornerback Tracy Porter was also concussed on the final play of the third quarter. As he fought to bring Demaryius Thomas to ground after a 4-yard completion Raiders defensive end Lamarr Houston's knee made contact with the back of Porter's helmet.