The Eagles will be without two Pro Bowl linemen when they look to halt a three-game losing streak in Buffalo this Sunday, but two defensive ends are working their way back to action. While defensive end Trent Cole (calf) and offensive tackle Jason Peters (hamstring) are listed as out on the official team injury report, head coach Andy Reid said that defensive end Darryl Tapp (pectoral) is likely to play and will be listed as probable while fellow defensive end Juqua Parker (high ankle sprain) is listed as questionable.

Reid acknowledged that Tapp is further along than Parker, but Reid was encouraged by Parker's practice on Friday.

"He felt a lot better today than he did yesterday," Reid said of Parker, who has been a limited participant in practice all week. "We're optimistic there."

Elsewhere on the defensive line, Reid said that there's a good chance that Derek Landri, who was signed earlier this week to replace Antonio Dixon, will be able to play Sunday in his first game of the season. Reid said that Landri arrived in good shape, and he's plenty familiar with the defense after spending the preseason with the Eagles (during which he registered 2.0 sacks).

Peters, meanwhile, will be replaced at left tackle this week by King Dunlap, who started five games for the Eagles in 2010. First-round pick Danny Watkins will make his first start at right guard after his insertion into the starting lineup for Kyle DeVan.