Conor McGregor left shocked by loss to Nate Diaz at UFC 196
He's far from the first. In this town of all towns, he sure as hell won't be the last. Las Vegas is a city littered with souls who have come here with great expectations only to see a massive gamble blow up in their face in a moment of brutal realisation.
However, Conor McGregor may be the only one who has ever walked away from such a disastrous denouement still $10m better off.
On Saturday night at the MGM Grand, the problem was that McGregor couldn't hold his breath at all. Nate Diaz, with all of 11 days' notice, strode off the beach and into the cage and cut off the Dubliner's circulation. With a stellar second-round submission of the UFC's golden boy, he suffocated a whole lot of hype too.
"It's a bitter pill to swallow. I took a shot and went at it. I was simply inefficient with my energy," McGregor said.
"Nate took [my shots] very well. The weight helped him take those shots.
"This is the game. I am happy to have come out and continue and stay in this fight. It didn't pay off. I will come back."
But McGregor's UFC record - and with it his very aura - will now forever have this black mark on it.