Coach Joe Gibbs said no decisions will be made until late in the week, but it appears running back Kelvin Bryant -- and perhaps defensive tackle Eric Williams -- are headed for injured reserve.

Gerald Riggs likely will be activated to replace Bryant and that would leave the Redskins with only one remaining free move. If Williams isn't better -- and he was still on crutches yesterday -- the last one will be used on Tracy Rocker.

Teams get an additional move for each week they're in the playoffs, and Gibbs also would like to bring receiver/return man Walter Stanley back as quickly as possible.

Bryant sprained a knee late in Saturday's 35-28 loss to Indianapolis, and a similar injury sidelined him six weeks two years ago.

Williams stretched a tendon in his left foot, and trainer Bubba Tyer said that by the end of the week he'll have a good guess how long Williams will be out. Similar injuries have sidelined players -- including Riggs -- six to eight weeks.

"We're probably going to have to use some of our moves this week," Gibbs said. "I'm not sure which direction we'll go right now. We'll watch a couple of days of practice and see how it shakes out. We're thin in the offensive and defensive lines."

With Earnest Byner averaging 28 carries a game the last six weeks, he'd like Riggs back and said: "We've got to look at it closely. Kelvin could be awhile, and the natural thing is to do something there. If Gerald looks good in practice this week, we'll have to make a decision. I'll take a good hard look Wednesday and Thursday and make up my mind."

Cornerback Sidney Johnson will also miss Sunday's game against Buffalo at RFK after suffering a concussion Saturday night. He was still in Arlington Hospital late yesterday, but probably will be released today.

Defensive end Markus Koch (knee) is expected to miss a second straight game, but everyone else probably will be available for the Bills.Handy to Have Around

With Bryant out, rookie Brian Mitchell likely will become the third-down specialist. That's the role the Redskins originally envisioned for him when he was drafted last spring, and his performance as a runner and kick returner has surpassed expectations.

"He's good, and we're still learning all the things he can do," Gibbs said. "He's a very athletic guy and everything we've asked to do has been a pleasant surprise. He's a bright guy and he's tough and has excellent hands -- huge hands."