[1] As a junior at Withrow in 2011–12, he averaged 15.2 points and 10.5 rebounds per game and earned All-Cincinnati Metro Athletic Conference First Team honors.

[2] On a roster full of Division I recruits, Williams was first-team all-state for independent players.

[1] On March 8, 2014, he scored a season-high 22 points and tied his season high for rebounds with 13 in a 92–86 win over Kansas.

[1] On March 7, 2015, he tied his career-best performance with 22 points and 13 rebounds in an 81–72 win over Oklahoma State.

[10] On March 29, 2016, Williams declared for the NBA draft, forgoing his final year of college eligibility.

[14] Williams struggled to make an impact for United off the bench over the first month of the season, which led to speculation of him being released by the club.

[17] In the following game however on December 17, Williams went down with a knee injury early in United's 100–90 loss to the Brisbane Bullets,[18] and was subsequently ruled out for four to six weeks with a Grade 2 medial ligament strain.

[19] On January 31, 2017, after fully recovering, Williams was granted a release from his contract to source opportunities to play in the US.

[24] On April 25, 2018, Vaqueros de Bayamón of the Baloncesto Superior Nacional was reported to have signed Williams.

[29] On September 16, 2020, Williams signed with Jiangsu Dragons of the Chinese Basketball Association.

[29] On July 7, 2021, Williams signed with Bahçeşehir Koleji of the Basketbol Süper Ligi, (BSL).

[31] On January 27, 2022, Unicaja Malaga has announced that Devin Williams has failed his medicals and therefore the agreement between the parts has been voided.