[9] Williams finished his high school career with 1,787 points scored, 749 rebounds and 310 assists over four seasons.

[17] Williams was named to the ACC All-Freshman team and the conference Sixth Man of the Year at the end of the regular season after averaging 9.2 points, 4.0 rebounds and one block per game.

[2] On December 23, 2020, Williams made his NBA debut, starting and putting up 16 points, four rebounds, one assist, one steal, and one block in a 104–124 loss against the Atlanta Hawks.

[23][24] Williams returned to the court on March 21, 2022, recording seven points and two rebounds in a 113–99 win over the Toronto Raptors.

[8] The Bulls qualified for the postseason for the first time since 2017 and faced the Milwaukee Bucks, the reigning champions, during their first-round series.

Williams made his playoff debut on April 17, recording five points, three rebounds and two steals in a 86–93 game 1 loss.

[26] On September 30, 2024, Williams had been cleared for training camp after experiencing foot discomfort during the Bull's minicamp.