Cox grew up in Kansas City, Missouri and attended Raytown South High School.
In the sixth game against Youngstown State University, he replaced an injured Chris Board and had 3 sacks.
He made 13 tackles (7 solo) in the semifinal 55–13 win over Sam Houston State University.
[5] As a sophomore, he was named the conference Defensive Player of the Year and first-team All-MVFC, after recording 15 starts, 91 total tackles (led the team), 9.5 tackles for loss, 4 sacks, 7 quarterback hurries and 4 interceptions, two of which he returned for touchdowns.
It was reported in the media, that he played the last part of the season with a torn labrum that required surgery in the offseason.
[8] He was one of the few bright spots on a team that struggled to a 5–5 overall record, after winning the CFP Championship the previous season.
He had a sack and returned an interception 14 yards for a touchdown in the season opening 34–44 loss against Mississippi State University.
[16] During a Week 8 game against the Minnesota Vikings, Cox suffered a right knee injury in the third quarter while covering a punt.
He was passed on the depth chart by rookie and former LSU teammate Damone Clark and played mostly on special teams, making 4 tackles in 9 games.
[17] In the 2023, preseason, he was part of a deep defensive unit and wasn't able to earn a roster spot.
[22] On January 7, 2024, Cox signed with the Arlington Renegades of the United Football League (UFL).