Mixed Martial Arts and former UFC fighter Elias Theodorou has died after a battle with liver cancer. He was 34 years old.

Theodorou died Sunday, a representative confirmed to TSN.

Theodorou went 8-3 in UFC from 2014-19 and was released from the promotion after losing to Derek Brunson in 2019. He last fought — and won — professionally in December 2021 against Bryan Baker. Theodorou had a 19-3 MMA record.

Theodorou became an advocate for the use of medical marijuana in combat sports later in his career. He became the first professional athlete to receive a Therapeutic Use Exemption for the use of medical cannabis in January 2020, according to MMA Junkie.

–Field Level Media