Rookie makes it through practice unscathed

Redskins quarterback Robert Griffin III participated fully in practice Thursday on his injured right knee, and coach Mike Shanahan remained optimistic about his status for Sunday's game at Philadelphia.

There are no guarantees yet, however. Shanahan said Griffin III will not be cleared by team doctors until they are sure he hasn't suffered any setbacks. After spraining his lateral collateral ligament late in a Dec. 9 win over Baltimore at FedEx Field, Griffin missed last week's game at Cleveland. He made it through Thursday's practice unscathed.

"If you're asking me if he's 100 percent, I don't think anybody is 100 percent, including Robert, especially after that LCL injury," Shanahan said. "But I like what I see."

The news wasn't quite so good for right tackle Tyler Polumbus, who suffered a concussion in the Cleveland game. He did not participate in practice Thursday. Shanahan says Polumbus still needs to pass the league's concussion protocol and hopes that happens Friday and that he can take part in practice.

Center Will Montgomery, however, did participate in Thursday's practice in full. He suffered a Grade 2 sprained MCL in his right knee against the Browns when a teammate rolled over his leg. Montgomery had been limited Wednesday. Defensive end Stephen Bowen has a torn tendon in his upper left biceps, but he too participated Thursday and -- even at less than 100 percent -- expects to play vs. the Eagles.

Linebacker Rob Jackson, a force in each of the last three games, missed practice for the second day in a row. His absence was not injury-related, however. Jackson's wife gave birth to their second child, London Paige Jackson, on Wednesday. The baby girl weighed in at 6 pounds, 12 ounces. That news capped a fine stretch for Jackson, who intercepted a pass against Cleveland.

"I think [Jackson] has progressively gotten better and better in all phases," defensive coordinator Jim Haslett said. "We've always thought he was a pretty good player against the run. He's had to work on it because he was a defensive end all his life in college. It's just one of those things that he had to work on."