Two Mayweather-Guerrero undercard fighters positive for banned substances

Two fighters who boxed on the undercard of the Floyd Mayweather Jr.-Robert Guerrero welterweight championship tested positive for banned substances, Keith Kizer, executive director of the Nevada State Athletic Commission, revealed Wednesday.

Matthew Garretson, a light heavyweight from Charleston, West Virgina, tested positive for furosemide, a diuretic on the World Anti-Doping Agency’s banned list because it can be used to mask other drugs. Garretson was stopped in the fourth round by Lannell Bellows in a preliminary.

J’Leon Love, who won a disputed split-decision over Gabriel Rosado that night, tested positive for hydrochlorothiazide, also a diuretic. Love, an up-and-coming middleweight who fights for Mayweather Promotions, is 16-0 with eight knockouts. He is from Dearborn Heights, Mich. Depending on the disciplinary action taken, the win over Rosado could be changed to a no-contest.

Kizer wrote in his email that “complaint for disciplinary action will be issued” on both fighters.

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