Things already are starting to heat up between Valentina Shevchenko and Amanda Nunes, as the current bantamweight champ shot down the Chicago winner's request for a rematch. At the post-fight press conference, "Bullet" said that Nunes' response showed she was "scared to fight." The pair squared off in a closely contested three-round fight at UFC 196, in which Nunes walked away with a unanimous decision. However, Shevchenko showed against former champion Holm that she is ready for primetime. And the time to make that rematch is now. http://www.foxsports.com/ufc/story/...olm-valentina-shevchenko-edson-barboza-072316 --- Nunes took to Twitter almost immediately after the callout to tell fans that even though she won their last matchup by unanimous decision, she'll beat Shevchenko even more impressively the next time. I won the first fight with @BulletValentina by UD... if I fight her again I will beat her again, this time very clean.#UFCChicago @joerogan — Amanda Nunes (@Amanda_Leoa) July 24, 2016 Then after thinking about it for a few minutes, Nunes decided that Shevchenko might not even be ready for a title shot yet. I feel she needs to prove herself a little more. I think @VenezuelanVixen vs @BulletValentina. Winner comes to me — Amanda Nunes (@Amanda_Leoa) July 24, 2016 Nunes and Shevchenko fought close three rounds back in March at UFC 196 that saw Nunes start win the first two rounds before Shevchenko turned up the heat in the third. The fight promises to be even closer if these two ever meet for five rounds in a title bout or main event.