[1] Mathis played college football for the North Dakota State Bison from 2018 to 2023.
Mathis played in North Dakota State's only game of the fall 2020 season, and caught one pass for 16 yards.
[6][1] He caught seven passes for 123 yards in the national championship game loss to South Dakota State.
Mathis was also named to the Missouri Valley Football Conference Honor Roll that season.
[1] After going undrafted in the 2024 NFL draft, Mathis attended rookie minicamp on a tryout basis with the Tampa Bay Buccaneers.