King of the Cage Making his pro debut in May 2016, Mix began regularly fighting for the
King of the Cage promotion. Mix went undefeated in the promotion, going 9–0 and he became
KOTC Bantamweight champion after defeating future
UFC bantamweight
Andre Ewell by submission.
Bellator MMA After having championship success in
King of the Cage, Mix was signed by
Bellator MMA. He made his promotional debut on June 14, 2019 at
Bellator 222, facing highly touted prospect Ricky Bandejas. Mix was victorious rather quickly, showing a superior ground game and submitting Bandejas with a rear-naked choke just 66 seconds into the first round. Mix was next scheduled to face Dominic Mazzotta on October 26, 2019 at
Bellator 232. However, Mazzotta withdrew from the bout and was replaced by Isaiah Chapman. Mix once again showed dominance on the ground, submitting Chapman with a Suloev stretch kneebar in the first round. For Mix's next bout, he fought in the
Rizin Fighting Federation, representing Bellator in a card that featured RIZIN fighters against Bellator fighters. He took on Yuki Motoya at
RIZIN 20 on December 31, 2019. He was victorious via first round submission. Subsequently, Mix signed his second multi-fight contract with Bellator. After racking up three straight first round victories as part of the Bellator promotion, Mix was linked to a fight against
Juan Archuleta for the vacant
Bellator MMA Bantamweight World Championship at
Bellator 242. However, Archuleta tested positive for
COVID-19 and the bout was delayed. The bout was rebooked and took place at
Bellator 246 on September 12, 2020. Mix lost the bout via unanimous decision, thus facing defeat for the first time in either his amateur or professional MMA career. Mix was expected to face James Gallagher at
Bellator 258 on May 7, 2021. However, Gallagher withdrew from the bout. UFC alum
Albert Morales was announced as a replacement. Mix won the bout via arm-triangle choke in the third round. The bout against James Gallagher was rescheduled for
Bellator 270 on November 5, 2021. At the weigh-ins, Mix missed weight for his bout, weighing in at 137.8 pounds, 1.7 pounds over the bantamweight non-title fight limit. The bout proceeded at catchweight and Mix was fined a percentage of his purse which went to Gallagher. Mix won the fight via guillotine choke submission in the third round.
Bellator Bantamweight World Grand Prix In the first round bout of the $1 million
Bellator Bantamweight World Grand Prix Tournament, Mix faced
Kyoji Horiguchi on April 23, 2022 at
Bellator 279. He won the bout via unanimous decision and moved on to the next round. In the
semi-finals, Mix faced
Magomed Magomedov on December 9, 2022 at
Bellator 289. He was victorious via second round technical submission and advanced to the final round of the tournament. In the
finals, Mix faced
Raufeon Stots for the Interim
Bellator Bantamweight World Championship on April 22, 2023 at
Bellator 295. He won the bout, the title, and the $1 million prize, knocking out Stots with a step up knee in the first round.
Bellator Bantamweight Championship Mix faced reigning
Bellator Bantamweight World Champion Sergio Pettis in a title unification bout on November 17, 2023 at
Bellator 301. He won the bout and unified the belt, submitting Pettis in the second round via rear-naked choke. As his first title defense, Mix faced
Magomed Magomedov in a rematch on May 17, 2024 at
Bellator 303. He won the bout via split decision. Mix was scheduled to make the second defense of his title against
Leandro Higo on November 16, 2024, at
Bellator Champions Series 6. However, this event was later cancelled due to unspecified reasons. On May 13, 2025, it was announced that Mix and
PFL had mutually parted ways.
Ultimate Fighting Championship On May 14, 2025, it was announced that Mix had signed with the
Ultimate Fighting Championship and replacing
Marlon Vera, who withdrew due to unknown reasons, Mix faced
Mario Bautista on June 7, 2025 at
UFC 316. Mix lost the fight by unanimous decision. Mix faced former
KSW Bantamweight Champion and promotional newcomer Jakub Wikłacz on October 4, 2025, at
UFC 320. On January 28, 2026, it was announced that Mix had been released from the UFC.
Rizin Fighting Federation Following his release, Mix signed with
RIZIN and is scheduled to return to the featherweight division to face Kyoma Akimoto on March 7, 2026 at
Rizin 52.. He lost the fight by technical knockout in the second round. ==Professional grappling career==