UFC on ESPN: Perez vs. Taira

[5] In turn on April 30, it was reported that the fight between Perez and Ulanbekov was back on for this event.

[6] After Perez was moved to the headliner spot, the promotion opted to book Ulanbekov against Joshua Van, who was Taira's original opponent at UFC 302.

[8] They were originally scheduled for UFC Fight Night: Rozenstruik vs. Gaziev but the bout was scrapped when Knutsson pulled out due to injury.

[11] A middleweight bout between André Muniz and Ikram Aliskerov was expected to take place at the event.

[14] In turn, the bout was scrapped during fight week as Aliskerov was pulled in order to serve as a replacement for Khamzat Chimaev against Robert Whittaker a week later in the main event of UFC on ABC: Whittaker vs.