Claressa Shields and Christina Hammer threw down at the Adrian Phillips Theater at the Boardwalk Hall in Atlantic City, N.J., on Saturday night, and the event ended on a historic note for Shields after she was unanimously crowned the undisputed women’s middleweight champion of the world, defeating Hammer 98-92, 98-92, 98-92. She now dominates the WBA, WBC, IBF, WBO and The Ring women’s middleweight titles