"He (McGregor) would come in there, he would break the rules. He would pin (Mayweather) and then he would proclaim himself 'the King of the Ring.' Even though he might lose the purse money, his brand would go through the roof," Atlas told ESPN. "And you know what? He's a promotional genius, just like Floyd is, just like Muhammad Ali was. Nobody's thinking about that part of it. Floyd, before he puts his John Hancock on a contract, he better think about that part of it."