A centerpiece of the UFC's historical UFC 100 event was the organization's first-ever fan expo.
Part trade show, part grappling competition, part meet and greet, UFC president Dana White said at the UFC 100 post-event press conference that UFC Fan Expo 2009 drew an estimated 30,000 to 50,000 attendees.
And with a few potential stadium shows on the horizon, those figures may not be the last time a group that large gathers in the name of a UFC event.
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