Mack, brother of former Bears superstar linebacker Khalil Mack, was signed with the Chicago Bears as an undrafted free agent following the 2020 NFL Draft. Mack was promoted to the active roster for the first time in his career on November 20, 2021. He made his NFL debut the following day against the Baltimore Ravens and recorded a tackle in the contest. He was promoted to the active roster again on December 18.
Mack is listed as a 6"1, 237 pounds linebacker. He followed the path of his brother by also playing at the University of Buffalo.
Here is one of his best plays of the 2021 season: