Take a look at some of the top title unification fights that have taken place over the history of the UFC featuring some of the biggest names in the sport and even fighters coming from different promotions.

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On this day in 2015, Conor McGregor completed his ascension to superstardom with a 13-second knockout of Jose Aldo at UFC 194 in Las Vegas.

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Watch UFC commentator Joe Rogan’s live reaction to Conor McGregor’s 13-second knockout of Jose Aldo at UFC 194 in 2015, and hear from the man himself on the mic immediately after the finish that won him the UFC featherweight title.

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#UFC #UFC194

Take a look back through the every featherweight champion in UFC history as the two most recent champions, Alexander Volkanovski and Max Holloway, prepare for a rematch at UFC 251.

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