Cristiane Justino vs. Ronda Rousey is MMA's unstoppable force meets immovable object. Both women reign supreme in their respective promotions: 'Cyborg' rules the roost in Invicta Fighting Championships and Ronda Rousey sits on her iron throne in the UFC. One major hurdle stands in the way of the two women locking horns for a UFC title: Rousey fights at 135 lbs. while Justino competes at 145 lbs.

After Rousey made short work of Cat Zingano at UFC 184 and Cyborg blasted Charmaine Tweet the night before at Invicta FC 11, talk of a potential super fight between the ladies naturally followed suit. The Brazilian campaigned hard for a grudge match with Rousey in the wake of UFC 184, but the former Olympian has decided to focus her efforts on upcoming opponent, Bethe Correia.

While 'Rowdy' is occupied with Correia, Cyborg is eyeing a potential fight with fellow women's star, Miesha Tate. Justino's manager George Prajin explained earlier to ESPN:

"Miesha Tate said she'd fight Cris at 140 pounds," Prajin said. "That's probably the second biggest fight in women's MMA, behind Cris and Ronda Rousey. It's a step in the right direction. That's what we would love to see in Cris' next fight. If not Miesha, let's see if one of the other girls will meet Cris halfway. I think a fight at 140 pounds would be a great test for Cris. As long as we continue to fight at 145 pounds, we're never going to really explore or learn more about Cris' ability to get to 135. I'm confident she can make 140 pounds and we'll evaluate 135 from there."

Perhaps if Miesha Tate can overcome Jessica Eye later this month at UFC on FOX 16 on July 25, the UFC will sign the papers on a catchweight 140 lbs. bout with Cyborg.