UFC 309 Preview: Main Event Uncertainty, Potential Double Retirement, and Newcomer Mauricio Ruffy Makes Promising Debut. The Ultimate Fighting Championship (UFC) is set to host its 309th event at the Madison Square Garden in New York City on November 18th. The main event features a highly anticipated match between Heavyweight champions, Francis Ngannou's replacement, Jon Jones, and Stipe Miocic, but there's uncertainty surrounding whether both fighters will compete beyond Saturday. Source: https://www.forbes.com/sites/brianmazique/2024/11/14/ufc-309-20-things-you-should-know/