**UFC on ESPN 55** featured a high-stakes flyweight main event between **Matheus Nicolau** (#5) and **Alex Perez** (#8). Held on April 27, 2024, at the **UFC APEX** in Las Vegas, the bout was a critical matchup for 125-pound title contention. Perez, a former title challenger, secured a spectacular second-round knockout victory after stepping in on short notice. The win snapped a three-fight skid and re-established him as a top-tier threat in the flyweight division.
Canceled Fights
5 fights canceledJames LlontopCANCELEDLando VannataReason: Vannata Withdrew
Maheshate HayisaerCANCELEDAnshul JubliReason: Jubli Withdrew
James LlontopCANCELEDGabe GreenReason: Green Withdrew
Joel AlvarezCANCELEDMateusz RebeckiReason: Alvarez Withdrew
Matheus NicolauCANCELEDManel KapeReason: Kape Withdrew
Referees
3 fights
3 fights
JH
4 fights
3 fights