Conor McGregor's bitter rivalry with Khabib Nurmagomedov came to a breathless end on a balmy Las Vegas evening in 2018. As the Russian locked in his rear-naked choke, his latest challenger tapped out as the oxygen raced from his brain.
Slumped on the canvas, McGregor had lost the biggest fight of his career having been dominated by the relentless champion. Barring a return from his third retirement in four years, McGregor and Nurmagomedov are unlikely to cross paths again - but where did their rivalry begin?
Incredibly, back in 2014 there was no sign of any hostility between the pair when they posed for a picture backstage after McGregor's win over Dustin Poirier.
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