en Cuevana 3. UFC on ESPN 61: Tybura vs. Spivac 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on August 10, 2024, at the UFC Apex facility, in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A heavyweight rematch between Marcin Tybura and Serghei Spivac headlined the event. The pair previously met at UFC Fight Night: Benavidez vs. Figueiredo in February 2020, which Tybura won by unanimous decision.