Marcos Maidana (L) of Argentina takes a punch from Floyd Mayweather Jr. of the U.S. during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena in Las Vegas, Nevada, May 3, 2014. REUTERS/Steve Marcus
Marcos Maidana (L) of Argentina takes a punch from Floyd Mayweather Jr. of the U.S. during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena in Las Vegas, Nevada, May 3, 2014. REUTERS/Steve Marcus REUTERS/Steve Marcus

Unbeaten American boxer Floyd Mayweather Jr is not called Money May for nothing. On Monday, during the first of the four-city promotion for his Sept 13 rematch with Argentinean boxer Marcos Maidana, Mayweather said he expects to earn $70 million from his first bout with Maidana on May 3.

The figure combines his guaranteed purse of $40 million and pay-per-view buys. In contrast, Maidana pocketed only a measly $1.5 million, plus his smaller share of PPV buys.

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He then dared Maidana to bet his earnings for the rematch as a proof that the Argentinean boxer believes in his skills.

"So if you believe in your skills like you say you believe in your skills, however much you're making for the fight, I'll bet I'll beat you," Mayweather dared.

He added, "If he believes in his skills, bet the fight. Either you're going to bet or not."

As part of his strategy to erase doubts about his win in their first bout which was not a unanimous decision, Mayweather accused Maidana of fighting dirty and using MMA moves.

"If he can beat me, do it the honest way, earn it the hard way. But I gotta realise this, I know where I'm at my career because I was a champion when your trainer was champion. It's been almost 20 years and I'm still here," Money May said.

But Maidana replied that he would prove in the rematch who is the better fighter.

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