In July 2009, the UFC held its unofficial 100th 'numbered event' however, officially, despite being called UFC 100, it was actually the 101st numbered event (not to mention the 133rd event overall). In January 2014, as part of the organization's global expansion, the UFC began airing various international events exclusively on their subscription-based digital network, UFC Fight Pass. Sonnen, the UFC began airing non-PPV events on either Fox Sports 1 or Fox Sports 2. Beginning in August 2013, starting with UFC Fight Night: Shogun vs. Historically, the UFC has also aired preliminary fights prior to the main fight cards, either on television via Spike, FX, and Fuel TV, or online via Facebook and YouTube. As such, events taking part in significantly different time zones, including UFC 70, UFC 75, UFC 89, UFC 95, UFC 105, UFC 120, UFC 122, and UFC 138, were given a same-night airing in U.S. Events such as UFC 72, which took place in Belfast, Northern Ireland, were sold on pay-per-view, but due to tape-delay, purchase rates were not as high as events that aired at a traditional starting time. Most of the 'numbered' events have taken place on pay-per-view, though there have been a few exceptions for reasons such as tape-delay. 'UFC Live' events, formerly aired on Versus.'UFC on Fuel TV' events, formerly aired on Fuel TV.'UFC on FX' events, formerly aired on FX.' UFC on Fox' events, formerly aired on Fox.'UFC on ESPN' events, currently airing on ESPN.'UFC on ABC' events, currently airing on ABC.'The Ultimate Fighter Finale' events, currently airing on ESPN+, formerly aired on Spike, FX, Fox Sports 1 or UFC Fight Pass.'Fight Night' events, currently airing on ESPN+, formerly aired on Spike, Fox Sports 1, Fox Sports 2 or UFC Fight Pass.'Numbered' events, currently airing on pay-per-view, with some exceptions.UFC events are separated into nine different formats:

Traditionally, every event starts off with a preliminary card followed by a main card, with the last fight being known as the main event. UFC's first event, UFC 1, took place on November 12, 1993. This is a list of events held and scheduled by the Ultimate Fighting Championship (UFC), a mixed martial arts promotion based in the United States. All UFC bouts take place inside the Octagon.

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