WATCH: The biggest threat to Ronda Rousey demolished her opponent in just 45 seconds last night

Ronda Rousey's been steamrolling female bantamweights, Cyborg's been demolishing female featherweights.

10 measly pounds stand in the way of the biggest women's mixed martial arts bout of all time but that is no longer a stumbling block as Cris Justino revealed her plans to move down to 135lbs and take on the undefeated Rousey. The revelation came after Cyborg absolutely destroyed Faith Van Duin in the main event of last night's Invicta 13 card. The 14-1, 1NC Brazilian came out with an early night in mind and rattled the New Zealander with a right hand. The fight was over soon after when Cyborg's non-stop barrage of punches led to a knee to the body which dropped Van Duin and, after some ground-and-pound, referee Steve Mazagatti waved the bout off. Limerick atomweight Catherine Costigan didn't enjoy such a fortuitous night as she experienced her first career defeat when Amber Brown caught her with a rear naked choke early on in the card.