[1] Horton flipped his commitment to New Mexico during his senior year following the departure of SMU head coach Chad Morris.

[5] Horton was moved from linebacker to defensive end in his first season playing for the Horned Frogs.

[8] He had four sacks, a forced fumble, and broke up a pass in TCU's 51-45 win over Michigan in the 2022 Fiesta Bowl.

[12] On November 22, 2023, Horton announced he was stepping away from football due to a personal health matter, and was placed on the non-football illness list.

[13][14] He was diagnosed with Stage IV Hodgkin lymphoma in December, which entered remission in March 2024.