Claressa Shields unanimously outpointed Danielle Perkins on Sunday night in the first undisputed heavyweight bout in women’s boxing to remain undefeated. Shields, a two-time Olympic gold medalist with titles in five divisions,

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,

Perkins withstood the assault and seemingly found more energy in the final three rounds and started landing powerful jabs and uppercuts on Shields, but eventually the aggression came back to bite. Perkins was searching for a late finish, but left herself open to a big right hook that dropped her to end the fight in the final seconds.