[3] Collard took his first and only amateur mixed martial arts bout less than two weeks after his 18th birthday.
[3] Collard competed solely in Utah regional circuit, amassing a 13–4 (1 NC) record before being signed to the UFC.
[14] Collard was expected to headline LFA 75 against Arthur Estrázulas on September 6, 2019 but withdrew from the bout due to a short notice call from the UFC.
In March 2020, Collard signed with Professional Fighters League and competes in the lightweight division.
[21] Collard faced Raush Manfio in the semifinals of the Lightweight tournament on August 13, 2021 at PFL 7.
[31] Collard faced Shane Burgos in the semi-finals of the lightweight tournament on August 23, 2023, at PFL 9.
[35] Collard faced former Bellator Featherweight champion A. J. McKee on February 24, 2024, at PFL vs.
[37][38] Collard started the 2024 season with a bout against former Bellator Lightweight champion Patricky Pitbull on April 12, 2024 at PFL 2.
[40] Collard faced Mads Burnell in the main event of PFL 5 at Jon M. Huntsman Center in Salt Lake City, UT on June 21, 2024.
[44] Collard was initially training boxing only to improve his offensive striking skills for mixed martial arts.
[3] However, he needed money to fix his car so he opted to take a short-notice professional boxing match.