	On January 2, 2019, Williams was waived by the Brooklyn Nets. He appeared in 17 games for the Long Island Nets, where he averaged 21.0 points and a league-leading 14.7 rebounds in 26.9 minutes per contest. Williams did not appear in a game for Brooklyn during his first stint. Nine days later the Brooklyn Nets re-signed Williams to another two-way contract. and he made his debut for the Brooklyn Nets on the same day, coming off the bench in a 122–105 loss to the Toronto Raptors with eight points, eight rebounds and two assists.