4. Cyborg Santos
Jeff Chiu/AP/Press Association ImagesIn a perfect world, the new UFC drug testing policy would test Cyborg Santos and she would be clean. Then we could get the dream fight that everyone wants to see. The most brutalizing female fighter in the world can make her return and face the only other female fighter as dominant as her. The animosity would be unbelievable, along with how much interest it would generate. Some people still dont quite understand why Rousey isn't considered a proper standalone pay-per-view draw yet. The only thing that has hindered her is the lack of quality opponents. None of her opponents have really been perceived as a threat. When people look at Cyborg and her highlight reel, you will realize in a matter of seconds, she truly is a threat. This could be the first opponent that Rousey doesn't completely manhandle in the clinch or even on the ground. While Tate pushed her to an extent, Rousey was in control for the most part. In contrast, you'd be shocked if Cyborg doesn't hurt Rousey or have some type of control at some point. For now it remains a dream fight, Cyborg needs to show that she can make 135 pounds in Invicta before anything else happens. This fight is destined to happen in 2015. That being said, nobody would be complaining if this fight was announced a month from no, as long as proper drug testing would occur.