Merab Dvalishvili is on the cusp of defending his UFC title four times in a single year—potentially a record-breaking achievement. But at UFC 323, Petr Yan stands ready to deliver an upset in their highly anticipated rematch, raising questions about whether Dvalishvili’s streak could be brought to a sudden halt.

A rematch between Merab Dvalishvili and Petr Yan will headline UFC 323 in Las Vegas, UFC CEO Dana White announced on Monday. Alexandre Pantoja is also set to take on Joshua Van, adding further depth to a high-octane event.

As UFC 316 approaches, bantamweight champion Merab Dvalishvili’s coach voices skepticism over former titleholder Sean O’Malley’s immediate rematch. The coach believes O’Malley may not have earned the right for a swift return bout.