Conor McGregor UFC
Conor McGregor, pictured during UFC 205 weigh-ins at Madison Square Garden on Nov. 11, 2016 in New York City, will earn the biggest purse of his career against Floyd Mayweather. Getty Images

Floyd Mayweather vs. Conor McGregor probably won’t turn out to be a very good fight, but both athletes will leave the ring a lot richer than they entered the bout. The boxing great and UFC’s biggest star are expected to earn nine figures for one night’s work on Aug. 26 at T-Mobile Arena in Las Vegas.

Neither Mayweather nor McGregor has been very shy when discussing his finances in the past, though that will change somewhat in regard to the upcoming super fight. The exact amount of money that Mayweather and McGregor will make won’t be disclosed because of a confidentiality agreement.

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“You know I’m the A-side. McGregor is a tough competitor. People all around the world demanded this fight so I had to give the people what they wanted to see. They asked for this fight. I was in retirement, but they wanted me back and I’m back,” Mayweather told Robert Littal of Black Sports Online.

“I can’t talk about that,” Mayweather said when asked how much money he would earn for the fight. “I can’t really disclose that, but both parties are happy. Both parties are very happy. He’s very happy, I’m very happy, and I can’t wait.”

But even with the silence by Mayweather and McGregor since they came to an official agreement, it isn’t that difficult to estimate a ballpark figure for the two fighters. UFC president Dana White wouldn’t give a breakdown of McGregor’s purse, but he did tell TMZ that he expected McGregor to make around $100 million.

Because McGregor is under contract with UFC, the company will have to take a chunk of the final earnings. As the “A-side,” Mayweather will garner more than half of the final purse. If McGregor is going to make around $100 million even after UFC takes their cut, that means Mayweather is due to make well over $200 million.

Much of the final paydays for Mayweather and McGregor will be based on the final pay-per-view numbers. The mega-fight between Mayweather and Manny Pacquiao generated a record 4.6 million PPV buys in 2015, leaving Mayweather with a final check worth between $220 million and $230 million, according to ESPN. Pacquiao reportedly earned $100 million for his efforts.

It’s hard to estimate exactly how many people will buy the fight, and the final buys for Mayweather-Pacquiao finished far ahead of the original projections. White previously predicted that Mayweather and McGregor would sell between 2.5 million and four million PPVs, but others believe a new record will be set later this summer.

Tammy Ross, who worked for HBO last year as senior vice president of HBO PPV, told ESPN that she can see Mayweather-McGregor setting a new record because it will bring together both boxing and UFC fans. HBO and Showtime charged fans $100 to watch Mayweather-Pacquiao, and the price could be the same on Aug. 26.

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“I think we thought that there wasn't going to be anything like that fight again, but if there was, it would be this one,” Ross said. “That's why I think they should put out the $100 price tag again and let Conor's mouth do the talking.”

Mayweather retired after he defeated Andre Berto two years ago, and he said he would only return to boxing for a fight that would make him at least $100 million. McGregor is the biggest star in MMA, but neither he nor any UFC fighter has ever had close to a nine-figure payday.