Redskins head coach Jay Gruden said early this week that he expected Williams to play even though Williams suffered a dislocated thumb against the New York Giants last week.
However, Gruden said on Thursday Williams was scheduled to see a specialist about his injury.
That visit will determine whether Williams needs surgery to repair the injury, and it will help Williams decide whether he can play with a cast on his hand. A decision on Williams’ status is expected to be made on Friday.
Williams has been named to the Pro Bowl each of the past six seasons and has made 113 NFL starts. The 30-year-old Williams was the fourth overall pick in the 2010 NFL Draft.
If Williams cannot play, Ty Nsekhe would start in Williams’ place. The 33-year-old Nsekhe has played in seven games this season but has not started any. He has made 11 starts in his NFL career, and this is his fourth season with the Redskins.
Redskins wide receiver Jamison Crowder and running back Chris Thompson also sat out practice. Crowder is expected to miss his fourth straight game with an ankle injury.