[6] Going into his redshirt senior year Williams lost his starting quarterback job to Tyler Huntley in training camp.
[8] After going unselected in the 2018 NFL draft, Williams participated in rookie minicamps Seattle Seahawks and the Los Angeles Chargers on a tryout basis was not signed by either team.
After the CFL canceled the 2020 season due to the COVID-19 pandemic, Williams chose to opt-out of his contract with the Eskimos on August 31, 2020.
[16] The Maulers folded when the XFL and USFL merged to create the United Football League (UFL).
[17] Williams was signed by the Memphis Showboats of the United Football League (UFL) on January 29, 2024.