[1] He was named the District 5-5A-I Offensive MVP in his junior season after posting 1,158 yards and 14 touchdowns.
[2] As a senior Mims set a national record with 2,629 receiving yards on 117 receptions with 32 touchdown catches and was named Mr. Texas Football and first team USA Today High School All-American.
[3][4][5] Mims finished his high school career with a state record 5,485 receiving yards.
[6][7] Mims initially committed to play college football for the Stanford Cardinal over offers from Notre Dame and TCU, but later decommitted during his senior year in favor of attending Oklahoma.
[30] On December 2, 2024 in a Week 13 Monday Night Football matchup against the Cleveland Browns, Mims caught a 93-yard touchdown pass by quarterback Bo Nix from the Broncos' own end zone.
Upon defeating the Colts the Broncos moved to 9–5, securing their first winning season since 2016 and increasing their chances of making the playoffs for the first time since Super Bowl 50 to 91%.
[33] Mims was subsequently named the AFC Special Teams Player of the Week for his critical return plays.