CLARESSA SHIELDS-SAVANNAH MARSHALL SET FOR SEPTEMBER 10
Two heated rivalries will come to a head Saturday, Sept. 10 in a historic championship doubleheader at the O2 Arena in London. The previously announced main event will see two-time Olympic gold medalist Claressa Shields, the WBC/WBA/IBF/Ring Magazine middleweight champion, aim to once again become undisputed at 160 pounds by facing longtime rival and…