Williams was selected by the Oklahoma City Thunder in the second round of the 2022 NBA draft with the 34th overall pick, becoming the first player of Vietnamese descent to be drafted in the NBA. Williams joined the Thunder's 2022 NBA Summer League team. In his Summer League debut, Williams scored two points and six rebounds in a 98–77 win against the Utah Jazz in the Salt Lake City Summer League. On July 19, 2022, Williams signed with the Thunder.
