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Shields's first name is Claressa. She is an American professional boxer and mixed martial artist who has competed in multiple weight classes. Shields is a two-time Olympic gold medalist, having won gold at the 2012 and 2016 Summer Olympics. She is also a multiple-time world champion, having held titles in the WBC, WBA, IBF, and WBO. Shields is known for her aggressive fighting style and powerful punches.