The Washington Redskins will be without four starters for this weekend's game against the Tampa Bay Buccaneers, including their top two cornerbacks.

Redskins head coach Jay Gruden announced Friday that cornerbacks Chris Culliver (knee), DeAngelo Hall (toe), center Kory Lichtensteiger (neck) and wide receiver DeSean Jackson (hamstring) will not play on Sunday vs. the Tampa Bay Buccaneers.

Gruden also confirmed that tight end Jordan Reed and three-time Pro Bowler Trent Williams are still going through concussion protocol.

Williams will see independent doctor today with hopes of gaining clearance for Sunday and although Reed has seen an independent doctor for his concussion, he is yet to receive written confirmation of clearance.

They are both listed as questionable vs. Tampa Bay.

Culliver will miss his third straight game due to a nagging knee injury. He last played against the Philadelphia Eagles on Oct. 4, but was clearly not 100 percent in that game.

Gruden confirmed earlier in the week that the fifth-year University of South Carolina product does not need surgery.

"He's just having some things done to it to hopefully relieve the issue and get him where he feels more comfortable to play," Gruden said. "He's still dealing with some pain and we're trying to alleviate that pain."

Hall, meanwhile, is missing his fourth straight game.

Lichtensteiger did not play in last weekend's game, breaking his consecutive starts streak at 52 games.

Gruden said last week that the seven-year veteran would probably return after the Bye Week.

"Kory is one of toughest guys on this squad and you can see after watching the tape that something was wrong with him," said Gruden on Oct. 15, referring to him playing through the Falcons game injured. "So, we want to make sure he gets it right where he feels like he can help this football team."

Despite limited action in practice last week, Jackson did not participate in any of the team's sessions this week. This was, in part, due to a "setback" he suffered last Thursday.

"I think the goal is to try to get him back going, running and all that stuff, get him some rest and see how he is after the bye," Gruden said.

Running back Chris Thompson (back) is doubtful for Sunday's game.

Thompson landed awkwardly on his back as he dove for a pass attempt last Sunday against the New York Jets.

He wouldn't miss any game action, but did admit it was a scary moment, worried at first that it might have been the second time in football career that he has broken his back.

"It was pretty sore, pretty swollen, but it's gotten better every day," Thompson said on Wednesday. "So I'm just steady trying to get my treatment and getting as much as I can before Sunday comes."

Gruden said on Friday that "there's still a concern" about Thompson's swelling, but that he's "a tough kid."

"He's already undersized as it is and that's a tough position to play," Gruden said. "But if it does go down considerably and he feels like he can go, we have to think about it. It wouldn't be an issue from a mental standpoint. He's been out there all the practices and all the meetings. He's a really bright kid, the issue is his back obviously."

On the defensive side, defensive ends Jason Hatcher (knee) Stephen Paea (back), along with linebacker Keenan Robinson (heel), are questionable vs. the Buccaneers.

Hatcher did not participate in Wednesday's practice and was limited yesterday.

Gruden said that the injury is "a little bit of it is wear and tear."

"He's played a lot of football in his day, and we try to rest him on certain days of week to make sure he's fresh on game day," Gruden said. "But it's just becoming a little bit of a nagging-type deal for him and we've rested pretty him well yesterday and today. Hopefully he'll feel a lot better come game day."

Paea was active last week against the Jets last week but did not record any action.

He said he "could have played," but the coaches elected to rest him and gave Frank Kearse extra reps.

Gruden also said that Bashaud Breeland (knee), Matt Jones (toe), Ty Nsekhe (foot), Andre Roberts (thumb) and Trenton Robinson (ankle) were all full participants on Friday and are probable on Sunday. 

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