Albert Haynesworth will not play in Thursday's preseason opener against the Baltimore Ravens, according to head coach Jim Zorn.

Zorn said it's "doubtful" that Clinton Portis will play, either.

Haynesworth and Portis are healthy, but coaches want to limit their work in preseason games so they are at full strength for the regular season.

Haynesworth is expected to make his Redskins debut on Aug. 22 in the team's preseason home opener against the Pittsburgh Steelers at FedExField.

Anthony Montgomery, listed as Haynesworth's backup, could draw the start at defensive tackle against the Ravens.

Portis is expected to play at some point during preseason.

"The thing about Clinton, he'll be ready to go [on Thursday]," Zorn said. "If I put him in, he'll go in and he'll give his best effort. I'm not concerned how much [Portis] plays and how much he doesn't play, especially in this first preseason game.

"I didn't play him in the first game last year and I probably won't play him [in the first game] this year."

Ladell Betts would draw the start in place of Portis. Marcus Mason and Dominique Dorsey should also see plenty of action.

Anthony Alridge sat out Tuesday's practice with a sprained toe. It does not appear that Alridge will be available for the Ravens game.

-- AT RIGHT TACKLE

The picture at right tackle, uncertain early this week due to injuries, has started to clear up.

Stephon Heyer is expected to start at right tackle in Thursday's preseason game in Baltimore. Heyer is healthy again after being slowed by a knee injury last week.

Jeremy Bridges, Heyer's backup, remains slowed by a sprained ankle. He could play on Thursday night if he is able to take part in some practice reps before the game.

"He has not been able to anchor [on his sprained ankle]," Jim Zorn said. "He has been getting better and better. Even if we can get him in, and he feels like he can anchor, and he can play a dozen plays, that's a bonus.

"I don't want him to have a setback, though."

Mike Williams, returning from a groin injury, is expected to play in his first NFL contest since 2006. Coaches and athletic trainers are expected to monitor his conditioning.

"He won't play the whole game," Zorn said of Williams. "I just want to get him in the game and let him get a sense of full-speed play. I want to get him a sense of how drives take on their own little life. I'm hoping for some long-developing drives. He knows what he has to do to maintain consistency."