Dan Bilzerian lost a monstrous pile of cash betting against Conor McGregor

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Conor McGregor was dominant in his UFC return on Saturday night, knocking out Donald "Cowboy" Cerrone in just 40 seconds.

It's likely no one was more disappointed with the quick finish than Dan Bilzerian, who placed a monstrous bet on Cerrone to pull off the upset.

While the exact total of Bilzerian's bet is unclear, internet sleuths estimated that his pile of cash was close to 1 million.

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Conor McGregor dominated in his return to UFC action on Saturday night, winning with a thunderous first-round knockout against Donald "Cowboy" Cerrone.

The main event of UFC 246 was fought in front of an electric Las Vegas crowd and likely sent many bettors home happy as the Irish favorite won in wild fashion.See the rest of the story at Business InsiderNOW WATCH: 5 things about the NFL that football fans may not knowSee Also:Conor McGregor just knocked out Donald Cerrone in 40 seconds, called his rivals fools, and said he's off to partyConor McGregor has adjusted his training as he's learned from the mistakes made before, during, and after his spectacular failure against Khabib NurmagomedovManny Pacquiao's manager says Conor McGregor knows where to go if he wants a 'proper fight' after UFC 246