Mayweather, Guerrero, Mares pass post-fight drug tests


The collective post-fight drug test results for Floyd Mayweather Jr., Robert Guerrero, Abner Mares and Daniel Ponce de Leon were negative for anabolic steroids, masking agents and marijuana following the their bouts at the MGM Grand Garden Arena on May 4 in Las Vegas, according to Keith Kizer, executive director of the Nevada State Athletic Commission.

Mayweather earned THE RING championship with a unanimous decision over Guerrero in defense of his WBC 147-pound title, and Mares scored knockdowns in the second and final round of his ninth-round knockout victory to dethrone Ponce de Leon as the WBC’s featherweight titleholder.

All 30 fighters on the card were tested, said Kizer, who also stated, “I will send out another e-mail when I get all the results on the other 26 boxers.”

Lem Satterfield can be reached at [email protected]