The rematch between former middleweight champion Luke Rockhold and Ronaldo "Jacare" Souza has been cancelled due to a knee injury suffered by Rockhold.
The news first broke via MMAFighting, who confirmed with multiple sources and Rockhold later confirmed the new via his Instagram account.
"Right now there is nothing I want more than to get back into the cage and do what I love most," wrote Rockhold. "Unfortunately, due to an injury to my left knee I had to withdraw from the fight. I apologize to the [UFC and Jacare] and most importantly to the fans. I will be back better than ever in pursuit of the belt."
The UFC has yet to reveal if it will find Souza a replacement opponent.
Souza's manager Gilberto Faria says that Souza is only interested in fighting current middleweight champion Michael Bisping. This matchup seems unlikely for Bisping as he is coming off a five round war with Dan Henderson, and would likely need more time to recover and train.
The rematch was previously set to be the main event of a UFC Fight Night card in Melbourne, Australia at the Rod Laver Arena on November 27.
The pair first faced off in 2011 when the fighters were still a part of Strikeforce. This would have been Rockhold's first fight back since losing his title to Bising via a first round KO at UFC 199.