[3] He was released by the Bengals on September 5, 2015, during final roster cuts and was signed to the practice squad the next day.

[7][8] On September 2, 2017, Williams was waived by the Bengals and was signed to the practice squad the next day.

[20] Williams signed with the Calgary Stampeders of the Canadian Football League (CFL) on December 5, 2019.

[22] He did not play a game for the Stampeders as the 2020 CFL season had been postponed to due the COVID-19 pandemic in Canada.

[26] In Week 6 against the New England Patriots, Williams recorded his first career interception off a pass thrown by Cam Newton during the 18–12 win.

[27] In Week 11 against the Miami Dolphins, Williams recorded his first two career sacks on Tua Tagovailoa during the 20–13 win.

[29] He finished the season with 39 tackles, one sack, and two passes defensed through 15 games and eight starts.

[30] He played all 17 games with 15 starts, recording 37 tackles and a career-high 4.5 sacks.