Quiñónez was born in Tlaltenango de Sánchez Román in the state of Zacatecas, Mexico. He was interested and involved in soccer when he was young where he tried out for Estudiantes Tecos and Pachuca soccer teams. He transitioned to train in mixed martial arts when he was a teenager together with his brother Cristian "Taylon" Quiñónez, starting out in boxing and jiu jitsu and later in MMA. Quiñónez got the entrance to UFC when he was selected as the one of the contestants in, The Ultimate Fighter UFC TV reality series. Quiñónez was a waiter prior becoming a professional MMA fighter.
Quiñónez was selected as one of the contestants for the Bantamweight division of, The Ultimate Fighter UFC TV reality series, under Team Cain Velasquez in August 2014. In elimination round, Quiñónez defeated Bentley Syler by TKO in round one. He next faced Marco Beltrán in the semifinals and won by unanimous decision. He moved on to face Alejandro Pérez on UFC 180 for the title belt.
Quiñónez made his promotional debut on November 15, 2014 at UFC 180. He faced Alejandro Pérez in the finals for in Mexico City, Mexico. He was defeated by Pérez via unanimous decision with the score board of. He next faced Leonardo Morales on June 6, 2015 at. He submitted Morales at 2:34 minutes into round one via rear-naked choke. After the fight, Quiñónez stated he would not want to fight another Latinos again as the promotion cut Morales from the roster after Morales lost the fight to him. After a 15 months hiatus due to a knee injury, Quiñónez returned to face Joey Gomez on September 17, 2016 at. After three round bout, Quiñónez outpointed Gomez and the judges awarded the win to Quiñónez via unanimous decision. Quiñónez faced Diego Rivas in on August 5, 2017. He won the fight by unanimous decision. Quiñónez faced Teruto Ishihara on February 10, 2018 at UFC 221. He won the fight via unanimous decision. Quiñónez was scheduled to face Sean O'Malley on October 6, 2018 at UFC 229. However, O'Malley was pulled from the fight on September 30 after failing a USADA drug test. In turn, promotion officials elected to remove Quiñónez from the card and he will be rescheduled for a future event. Quiñónez faced Nathaniel Wood on 16 March 2019 at UFC Fight Night 147. He lost the fight via a rear-naked choke submission in the second round. Quiñónez faced Carlos Huachin on September 21, 2019 at UFC on ESPN+ 17. He won the fight by unanimous decision. Quiñónez faced Sean O'Malley on March 7, 2020 at UFC 248. He lost the fight via TKO in the first round.
Personal life
Quiñónez grew up in a "tough" neighborhood, as he has declared. Although, he never liked violence, and he always stayed out of trouble. He practiced football soccer during all his childhood, until he was a teenager, where he started training boxing. His moniker " El Teco" coined after now defunct "Estudiantes Tecos" football team in Mexico. Quiñónez distinctive mustache was the idea came from his friend and UFC fighter Yair Rodriguez, where now he has shaved it to signify a restart of his MMA career. Quiñónez looks up to Dominick Cruz, who he trains with at Alliance MMA gym in California, where he stated he wanted to achieve the level of fighting skills and to adopt the philosophy that of Cruz's. His hobbies are reading, and hiking in nature: Exploring lakes, mountains, forests.
