I’d like to apologize to all the fans who were excited for UFC 178. Earlier this week, I suffered an injury while training for the fight. I’m having surgery tomorrow and I’m focused on recovering as quickly as possible. I look forward to getting back in the gym and defending my title on Jan. 3 in Las Vegas.

In a recent post to his facebook fan page, UFC champion Jon Jones apologized to fight fans for having to withdraw from his scheduled date with Daniel Cormier.

UFC 178 is still going down, and Demetrious Johnson is pumped to take Jones’ slot.

Here’s the new fight card:

Champ Demetrious Johnson vs. Chris Cariaso – for flyweight title
Dominick Cruz vs. Takeya Mizugaki
Tim Kennedy vs. Yoel Romero
Amanda Nunes vs. Cat Zingano
Conor McGregor vs. Dustin Poirier
Brian Ebersole vs. John Howard
Patrick Cote vs. Stephen Thompson
Kevin Lee vs. Jon Tuck
Bobby Green vs. Jorge Masvidal
Manny Gamburyan vs. Cody Gibson