The UFC’s highly anticipated main event at UFC Vegas 107 on May 31, 2025, came to a shocking halt just moments before the fighters were set to make their walk to the octagon. A matchup between top-ranked flyweights Erin Blanchfield and Maycee Barber had all the makings of a thrilling contest, but unforeseen circumstances led to the cancellation of the fight, leaving fans and fighters alike disappointed.