Mathis grew up in Lakeland, Florida and attended Lakeland Senior High School. Mathis was rated a three-star recruit and initially committed to play college football at South Carolina.[1] He later decommitted from South Carolina and signed to play at Pittsburgh.[2]
College career
Mathis played in nine games as a freshman, appearing mostly on special teams.[3] Mathis played in all 13 of Pittsburgh's games with 10 starts in his junior season and recorded 23 tackles 23 tackles with 11 passes broken up and two interceptions.[4] He suffered a non-football related shoulder injury prior to his senior season and used a medical redshirt.[5] In his fifth season, Mathis played in 13 games and had 44 tackles, with six passes broken up and two interceptions, one of which he returned for a touchdown, and was named honorable mention All-Atlantic Coast Conference.[6][7] After the conclusion of his college career, he played in the 2022 Senior Bowl.[8]
On August 27, 2024, Mathis was placed on short-term injured reserve by the Broncos ahead of the 2024 NFL season.[13] He was activated on October 17.[14]