He played college football at Chattanooga, and signed as an undrafted free agent with the Tennessee Titans in 2018.

As a senior, he repeated as first-team all-region and the defensive player of the year after tallying 121 tackles, 21 for loss, and 29 quarterback pressures with four forced fumbles.

He became a starter on the Mocs defensive line in his redshirt freshman season, making 54 tackles, nine for a loss, 3.5 sacks and a forced fumble and was named to the Southern Conference (SoCon) All-Freshman team.

[4] Mack signed as an undrafted free agent with the Tennessee Titans on April 28, 2019 and made the team out of training camp.

[6] Mack made his NFL debut in the season opener against the Cleveland Browns, recording one tackle in the 43-13 road victory.

[7] In the next game against the Indianapolis Colts, he recorded his first NFL sack after bringing down quarterback Jacoby Brissett in a narrow 19-17 loss.

[8] During Week 8 against the Tampa Bay Buccaneers, Mack recovered a fumble lost by Jameis Winston in the 27-23 win.

[27] On January 16, 2023, Mack was claimed off waivers by the New York Jets, but not officially added to their roster until after Super Bowl LVII.