[2] Williams was the first player ever to skip college basketball and play a year in the D-League before getting drafted in the NBA.

As of April 2022, Williams has never played a competitive game (regular season or playoff) in the NBA, being one of two D-League draftees to hold such claim (the other being Chukwudiebere Maduabum).

He then attended Christian Life Center Academy, a private school in Humble, Texas, for a year to complete the 14 other core courses he needed.

He continued to play on prep level and averaged 23 points, 12 rebounds, 2 blocks, 4 assists and 4 steals for the Christian Life Center Academy.

He was expected to sign with an overseas team before entering the NBA when he became eligible, a similar path taken by Brandon Jennings who played in the Italian league for a year before he was drafted in 2009.

He scored in double figures 16 times and recorded double-figure rebounds in 13 games during the regular season.

[13][14] Williams was automatically eligible for the 2010 NBA draft as he was already one year removed from his high school graduation.

[16] His best game came during the win against the Philadelphia 76ers when he scored 10 points, with 5 rebounds, and 3 blocked shots in 15 minutes off the bench.

He then joined Metros de Santiago of the Dominican Republic for s short stint before signing a two-month contract with German League and EuroLeague team Brose Baskets on October 4.

After serving out another short stint with Metros de Santiago,[26] Williams signed with Bilbao Basket of Spain for the 2014–15 ACB season on August 29.

[27] On June 4, 2015, he signed with Vaqueros de Bayamón of Puerto Rico for the rest of the 2015 BSN season.

[30] On June 2, 2017, he signed with Bucaneros de La Guaira of Venezuela for the rest of the 2017 LPB season.

On April 16, 2019, Williams parted ways with Igokea to join Tecnyconta Zaragoza for the rest of the season.

[35] On October 5, 2019, Williams recorded a double-double of 23 points and 14 rebounds in his debut, shooting 8-of-11 from the field in an 89–75 win over Hapoel Tel Aviv.

[38] On December 14, 2019, Williams recorded a season-high 25 points, along with 12 rebounds for 41 PIR in an 84–91 loss to Maccabi Tel Aviv.