Mayweather had failed to meet the deadline last Friday for paying the $200,000 sanctioning fee required by the WBO after he took the belt from Pacquiao on May 2 in Las Vegas, in the richest fight of all time, earning a reported $220 million in the process.
WBO rules require boxers to pay 3 percent of their purse to fight for a world title up to a maximum of $200,000.
The rules also prohibit WBO champions to hold any belts in any other weight divisions. Mayweather is currently also the WBC and WBA champion at junior middleweight (154lb), as well as at welterweight (147lb).
A statement on the Puerto Rico-based sanctioning body’s website confirmed that Mayweather, regarded as the best pound-for-pound boxer in the world, was no longer the WBO champion.
“Mr. Mayweather, Jr. failed to pay the $200,000.000 fee required of him as a participant of a WBO World Championship Contest,” said the statement