Claressa Shields fights Danielle Perkins at Dort Financial Center, Sunday in Flint for undisputed women's heavyweight championship. See live updates.

The "GWOAT" defeated Danielle Perkins by unanimous decision to become boxing's first-ever women's undisputed heavyweight champion. She also earned the accolade of being the only three-division undisputed champion, male or female, of the four-belt era.

Claressa Shields has done it again. Shields, an undefeated world champion boxer, captured the undisputed heavyweight title with a unanimous decision victory over previously unbeaten Danielle Perkins on Sunday,

Claressa Shields says she's tapped into more power as a heavyweight and will have a chance to show it off Sunday against Danielle Perkins.