In February, Rousey admitted to Ellen DeGeneres that she was suicidal after the upset, but credited her boyfriend, fellow UFC fighter Travis Browne, for helping her deal with the situation.
Ever since Rousey lost to Holm in Melbourne last November, several detractors have writen her off as a legitimate threat to Nunes, who captured the bantamweight title at UFC 200 earlier this year.
Author Mike Cernovich compared her loss to that of Clinton's in the U.S. election, writing: "Ronda Rousey supported Hillary Clinton".
Rousey may have been missing from the presser, but Dana White told reporters that he will try to get her to participate in media events in the next few weeks. Battering Rousey with punches to the face until referee Herb Dean stepped in to stop the fight.
Ronda Rousey was unstoppable during her rise to the pinnacle of the women's bantamweight division - first dethroning Miesha Tate to become the champion in StrikeForce before carrying her dominance over into the UFC.
Rousey had previously been unbeaten and admitted that she had even considered suicide in the wake of the defeat.
During the walkout, which included Rousey's traditional "Bad Reputation" by Joan Jett, Rousey was cheered wildly as she marched to the cage in quick fashion as usual. Nunes has not been submitted since her professional debut in 2008. Nunes came forward with punches and when she started landing, she never really stopped. It just takes one right hand to rattle anyone.
Jokingly UFC fans started to draw parallels between Rousey's loss and Hilary Clinton's capitulation in the U.S. election.
Rousey has spoken openly about spiraling into depression in the wake of her defeat by Holm, and many have questioned her emotional fitness to return to the ring. Take Rousey and count your money later tonight.
On the other hand, Nunes has been on a tear of late. So regardless of whether she comes back or doesn't come back, she is a victor.
While Holm's win was dominant, it was far more strategic and cerebral. Nunes' victory was a savage and flawless win.
Rousey will be hoping to quickly prove that the Holm fight was a fluke, not the beginning of the end.
"This is incredible", Nunes said. She's done a lot for her company, done a lot for the sport, done a lot for women. How does Rousey fare against Nunes?
"When Ronda has something to prove to the world, she's tough".