Conor McGregor watched on at BKFC 72 when former boxing world champion, Hannah Rankin was brutally KO'd during her featherweight title fight.

Claressa Shields beat Danielle Perkins at Dort Financial Center, Sunday in Flint for undisputed women's heavyweight championship. Check out recap.

Lots of movement after a boxing card with 17 titles on the line. Here's the latest women's pound-for-pound rankings.