Nunes should take Cyborg down and g&p her. Cyborg supposedly has very legit grappling credentials, but avoids grappling altogether. Daria Ibragimova had her against the cage for a good 3 minutes, and Cyborg couldn't do anything even with that scary power of hers, she couldn't do anything to Holm while they were clinched, Kunitskaya took her down and held her against the cage, Coenen repeatedly pushed her against the cage and was in full guard while on her back. You can't knock Cyborg out, she's made of steel. But you can TKO or submit her.
I don't like Nunes, but I'll be rooting for her. Just don't keep it standing, besides Holm, only Anderson has a slight chance of standing with her.