The two fighters have gone back and forth for almost a year regarding a potential showdown with both men previously stating they each wanted US$100 million (RM425 million) for the fight. "I was in retirement, but they wanted me back and I'm back".
"THE FIGHT IS ON", McGregor tweeted several minutes earlier, posting a picture of himself next to one of Mayweather's father, Floyd Sr.
The economic expectations have been set so high because intense public demand for Mayweather-McGregor transformed it from a dismissed mismatch to a reality that'll take place 10 weeks from Saturday night.
"The reason he's such a superstar is this guy will fight anyone, anywhere and at any time", UFC chief Dana White said about his fighter.
The fight is expected to gross millions of dollars with Mayweather a solid favourite.
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Wyden said the answer "doesn't smell the pass test". "I don't understand how you can have it both ways", King said. Raising his voice, he said: "This is a secret innuendo being leaked there about me and I don't appreciate it".
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McGregor, meanwhile, has never competed in a professional boxing bout, but has been successful in mixed martial artists, collecting two championship belts in two different weight classes in the leading MMA promotion Ultimate Fighting Championship (UFC).
The relentless reaction Leonard Ellerbe has received from fans since the Mayweather-McGregor drama began late past year made the Mayweather Promotions CEO realize just how huge the event could become. The undefeated five-division champion hasn't fought since he soundly defeated Andre Berto (31-5, 24 KOs) by unanimous decision in another 12-rounder in September 2015. After earning $34 million past year, per Forbes, McGregor could wind up tripling that amount for the Mayweather bout alone.
Financial terms were not released, though Mayweather got the greater share of revenue when he fought Manny Pacquiao and is expected to have a similar percentage against McGregor.
And White, in whose organisation Irishman McGregor has become a world champion, told Fox Sports: "It's definitely the biggest fight ever in combat sports history, and probably going to be the biggest payday ever". "We've actually tapped into the audience that really doesn't follow either sport".