American Claressa Shields was crowned boxing's first undisputed world champion in three weight classes on Sunday after beating compatriot Danielle Perkins for the women's heavyweight title by unanimous decision in front of a home crowd in Flint,

Claressa Shields outpoints Danielle Perkins to become first undisputed heavyweight champion in womens boxing; 29-year-old only boxer, female or male, to achieve undisputed status across three different divisions in four-belt era;