Floyd Mayweather Jr.
Floyd Mayweather might be known as "Money," but that's not something he has to his name. The IRS is owed $22.2 million by Mayweather, but he went into retirement. He came out of this in 2018 for a fight to rake in some extra dough, but it's now looking like he might have to reappear in the ring again to get out of this issue.
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