UFC 24: First Defense

The event was built around Kevin Randleman’s first Heavyweight title defense against Pedro Rizzo, but became infamous when Randleman slipped backstage, hit his head on concrete, and knocked himself out, forcing the headliner to be canceled mid-event. The incident highlighted the promotion’s instability at the time. The card is also remembered for the UFC debuts of Jens Pulver and Dave Menne, both of whom would later shape key divisions.