And Nunes herself threw one last punch not long after the fight, tweeting this picture about how she owns Rousey.
Of course, there was plenty of other social media reaction throughout the sports world because of the stunning and swift outcome, the uncertainty of Rousey's MMA future, and the emergence of Nunes as the next big star after such a decisive victory.
Here's a sampling of the reaction from the world of MMA and beyond:
THE CHAMP!!!! BETTER REMEMBER THE NAME @Amanda_Leoa— Paige VanZant (@PaigeVanzantUFC) December 31, 2016
Jeez Rousey looked like a piñata. #UFC207— Scott Holtzman (@HotSauceHoltzy) December 31, 2016
Nunes looked great tonight but I hope no one forgets the absolute nightmares Ronda gave women for years while she was on top. #UFC207— Joe Lauzon (@JoeLauzon) December 31, 2016
What in the world just happen in Vegas at UFC, no head movement, awkward stiffness, not relaxed, this has to be the trainers fault 😡😡😡— Chad Johnson (@ochocinco) December 31, 2016
Me after watching Rousey take this loss pic.twitter.com/8l7exGhv7q— Justin Forsett (@JForsett) December 31, 2016
Hope Rousey is fine mentally and spiritually after this fight. Most of you will never know the pressure! Yet y'all gone talk crazy smh— Damian Lillard (@Dame_Lillard) December 31, 2016
Ronda rousey should have picked a warmup fight so that she could have gotten her legs under her. I felt so sorry for her 😢! #48SecondsKO— Jermaine O'Neal (@jermaineoneal) December 31, 2016
-- James Quintong