Birchak is a replacement for Felipe Colares, who recently tested positive for COVID-19. Fansided was first to report the new bantamweight bout. UFC on ESPN 17 takes place on Saturday at the UFC Apex in Las Vegas and is headlined by a light heavyweight clash pitting Thiago Santos against Glover Teixeira.
Birchak enters the matchup with Lopez on a three-fight winning streak, with each of those victories coming inside of a round. In his last outing, the 34-year-old Arizonan scored a first-round submission of Erik Radleim at Combate Americas “Tucson” in October 2019. Birchak went 2-2 during a brief UFC stint from 2014 to 2016 before transitioning to Rizin, where he went 0-3 in the Japanese organization in three 2017 appearances.
A nine-time Combate Americas veteran, Lopez had a three-fight winning streak snapped in his debut with the Las Vegas-based promotion at UFC on ESPN 10, where he dropped a unanimous verdict to Merab Dvalishvili on June 13.