here's a look at boxing's undisputed men's and women's champions in the four-belt era: Check out the ESPN boxing hub page for the latest news, analysis, rankings, schedules and more.

On Sunday in Flint, Michigan, Shields dominated Danielle Perkins to become the first undisputed women's heavyweight champion in the four-belt era. Shields (16-0, 3 KOs) sent Perkins to the canvas ...

While there were many undisputed champions prior to 2007, here's a look at boxing's undisputed men's and women's champions in the four-belt era: ...