12:27pm: The timeline for Williams’ recovery is based on the date he was injured, which was September 15, tweets Rob Schaefer of NBC Sports Chicago. That should put his return sometime between October 13-27.
The team confirmed the news (via Twitter), stating that the injury happened during an optional individual workout and Williams is expected to be sidelined for four-to-six weeks. Chicago opens its season October 20 against the Pistons.
Williams is coming off a strong rookie season in which he started all 71 games that he played and averaged 9.2 points and 4.6 rebounds per night. He also gave the Bulls a strong defensive presence on the perimeter.
In the same tweet, the team provided an injury update on guard Coby White, who underwent surgery on his left shoulder in June. The Bulls say White has made “steady progress” and is expected to be ready to play in November.