Ian Rapoport of NFL Network reports that Williams suffered a "somewhat rare ACL sprain," but that three weeks timeline seems to be an appropriate estimate for the defender's recovery.
Williams, 29, left Sunday night's game in the fourth quarter after a collision with an Eagles player. He limped off the field under his own power, left for the team's locker room, and was listed as "questionable" to return.
Jamar Taylor replaced Williams.
Williams has recorded 12 tackles and two passes defensed in four games and two starts this season.
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