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 became the first undisputed world champion in three weight classes by beating Danielle Perkins for the women's heavyweight title in Michigan. The 29-year-old won by unanimous decision,

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