Irwing "Irwin" Armando Rivera (born February 14, 1989) is a Mexican mixed martial artist who competes in the Bantamweight division of the Eagle Fighting Championship. A professional mixed martial artist since 2014, Rivera has competed for Combate Americas, Ultimate Fighting Championship and Titan FC where he was the Bantamweight Champion. Background Rivera was born in Ciudad Nezahualcóyotl, Mexico, but immigrated with his parents to New Windsor, New York where he grew up. He has a younger sister Kelly, older sister Lezlye and a brother. Rivera initially trained for boxing, but dabbled into mixed martial arts after his boxing gym closed its doors. Mixed martial arts career Titan FC After getting cut from Combate Americas, Rivera made his Titan Fighting Championship debut against Edir Terry at Titan FC 48 on February 16, 2018. He lost the fight due to technical knockout stemming from a leg injury. Rivera made his sophomore appearance in Titan FC against Lazar Stojadinovic at Titan FC 53 on March 15, 2019. He won the fight via first-round knockout. Rivera then faced Matt Wagy for the interim Titan FC Bantamweight Championship at Titan FC 55 on June 28, 2019. Rivera claimed the interim championship via fourth-round technical knockout stemming from a body punch. On November 11, 2019, Rivera was elevated to undisputed Bantamweight Champion after the reigning champion Rudson Caliocane vacated the title. For his first title defense, Rivera faced Danny Sabatello at Titan FC 58 on December 20, 2019. Rivera retained his title via fourth-round technical knockout. In May 2020, Rivera vacated his title in order to sign with the Ultimate Fighting Championship. Ultimate Fighting Championship Replacing Mike Davis on two days' notice, Rivera signed with the UFC and faced Giga Chikadze in a featherweight bout at UFC Fight Night 172 on May 16, 2020. He lost the fight via unanimous decision. Rivera made his second appearance in the organization at UFC Fight Night: Lewis vs. Oleinik on August 8, 2020 against Ali AlQaisi. He won the fight via split decision. Rivera faced Andre Ewell on September 19, 2020 at UFC Fight Night 178. He lost the fight via split decision. Rivera was scheduled to face Ray Rodriguez on March 13, 2021 at UFC Fight Night 187. Due to the two counts arrest of attempted murder of his two sisters, UFC rescinded their bout negotiation. Eagle Fighting Championship Rivera faced Firdavs Khasanov at Eagle FC 46 on