Most outrageous, controversial moments of Floyd Mayweather Jr.'s career

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Floyd Mayweather Jr. and 50 Cent aka Curtis Jacksonattends the Lionsgate Home Entertainment and Grindstone VIP screening of

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Mayweather's antics have made him the hottest pay-per-view draw in boxing, but he's made plenty of enemies and caused plenty of headaches along the way. Will we see another controversial moment on Saturday when the mercurial star fights Robert Guerrero?

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