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The Boston Globe

Sports

A more mature Floyd Mayweather Jr. set to defend title against Robert Guerrero

LAS VEGAS — He claims to be more mature now, chastened by a stint in jail and eager to be just as much a businessman as a fighter. Indeed, Floyd Mayweather Jr. acted almost statesmanlike this week when Robert Guerrero’s father began screaming that he was a woman beater who would finally get beaten himself Saturday night.

‘‘The fighters are the ones who fight, not the fathers,’’ Mayweather said calmly.

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