Rookie Jon Bostic saw time with the first team in place of Williams, whose status is week to week, according to the team.
Among the other news and notes from Wednesday:
Starting left tackle Jermon Bushrod did not practice two days after suffering a right calf strain. He was seen Wednesday in a walking boot. Cory Brandon and Eben Britton took reps in his place at left tackle.
The Bears signed defensive lineman Josh Williams to a three-year contract to replace the injured Turk McBride, who was lost for the season Monday with a ruptured Achilles tendon. Williams, an undrafted free agent out of Kansas, attended the Bears rookie minicamp. The Bears terminated the contract of McBride and he received an injury settlement.
Offensive lineman Jonathan Scott got banged up at practice and was seen watching practice with hisright knee taped up.
Check back for updates on all these stories throughout the day.
ESPNChicago.com's Jeff Dickerson contributed to this report.