He was signed by the Denver Broncos as an undrafted free agent after the 2016 NFL draft.

On July 26, 2016, Sankey was signed to the Denver Broncos as an undrafted free agent.

[4][5] On December 5, 2016, Sankey was signed to the Kansas City Chiefs' practice squad.

[9] Three days after he was cut by the Vikings, Sankey was signed by the Indianapolis Colts on August 23, 2017.

[10] He was waived on September 2, 2017, and was signed to the Colts' practice squad the next day.

[17] On November 29, 2017, Sankey was signed to the Baltimore Ravens' practice squad.

[28] After the CFL canceled the 2020 season due to the COVID-19 pandemic, Sankey chose to opt-out of his contract with the Stampeders on August 31, 2020.