The Nevada State Athletic Commission handed Conor McGregor a major early victory over Floyd Mayweather on Wednesday, when it overturned its own rules regarding glove size. According to Nevada’s boxing rules, all fighters over 147 pounds must wear 10-ounce gloves. Mayweather and McGregor’s Showtime pay-per-view superfight on Aug. 26 will be contested at the junior middleweight limit of...