Kevin Vallejos

Kevin Axel Vallejos Montenegro (born December 8, 2001) is an Argentine mixed martial artist, who competes in the featherweight division of the Ultimate Fighting Championship (UFC). As of March 17, 2026, he is #10 in the UFC featherweight rankings.

Mixed martial arts career
Early career
Vallejos made his professional mixed martial arts debut in September 2021, defeating Rocco Cena by technical knockout at Supreme Warrior 6. He later competed in the Argentine promotion Samurai Fight House, where he captured multiple regional titles including bantamweight, featherweight, and lightweight championships including a defence over UFC veteran Luiz Eduardo Garagorri.

Dana White's Contender Series
After compiling an 11-0 professional record, Vallejos would compete for a UFC contract on Dana White's Contender Series: Season 7, Week 5 on September 6, 2023, but lost a unanimous decision to Jean Silva, marking his first career loss.

After two more wins on the South American regional scene, Vallejos was scheduled to return on Week 7 of Season 8 of Dana White's Contender Series on September 24, 2024, to face Luke Riley. However, Riley had to withdraw from the contest due to visa issues and was subsequently replaced by undefeated prospect Cam Teague. He won the fight via first-round knockout and was awarded a contract by Dana White.