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, dominating fellow American Perkins throughout and knocking her down with a powerful right hand with seconds left in the 10th and final round.

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,