Critics can approach Conor McGregor however they please, but few martial artists have matched excessive hype with such an exquisite performance.
The flamboyant Irishman quieted his detractors and set the MMA world ablaze with one swing of his powerful left hand when he unified the Ultimate Fighting Championship featherweight crown with a shocking knockout of the great Jose Aldo a mere 13 seconds into their UFC 194 headliner on Dec. 12, 2015 at the MGM Grand Garden Arena in Las Vegas. Nearly a decade later, it remains the fastest finish in a championship fight in UFC history.