UFC Hall of Famer Ronda Rousey and current bantamweight contender Kayla Harrison squared off on the Judo mats at the 2005 U.S. Judo Championships. Before both Harrison and Rousey went on legendary runs in MMA, they made themselves into legends in Judo, putting the U.S. team on the map for years to come.

With her win at UFC 316, Kayla Harrison has done the unthinkable. The new bantamweight champion is defying the odds, with a feat that not even the likes of Ronda Rousey, Henry Cejudo or Daniel Cormier managed to achieve.

Demetrious Johnson has come under fire for his warning to Kayla Harrison after her UFC 316, by the Olympian's close training partner.

Before Ronda Rousey made her UFC debut, promotional boss Dana White declared that women would never fight in the octagon. She changed all of that, and over a decade later the likes of Kayla Harrison are headline attractions in world title pay-per-view bouts.