Jon Jones injured, Daniel Cormier grudge match postponed until UFC 182 on Jan. 3

Ultimate Fighting Championship (UFC) light heavyweight champion Jon Jones suffered a leg injury and has been forced to withdraw from his upcoming title defense against 205-pound nemesis Daniel Cormier, which was originally scheduled for the UFC 178 main event on Sept. 27, 2014, in Las Vegas, Nevada.

"Jones vs. Cormier" now shifts to the UFC 182 pay-per-view (PPV) headliner on Jan. 3, 2015, also in "Sin City."

As a result, the UFC 178 main event will now feature the flyweight championship contest pitting reigning 125-pound kingpin, Demetrious "Mighty Mouse" Johnson, against division No. 1 contender, Chris Cariaso (more on that fight here).

That could be a tough pill to swallow for mixed martial arts (MMA) fans who may have already purchased tickets or made prior travel arrangements. Card subject to change, and all that jazz. The good news is, the promotion will issue a refund if you're not going to see it through.

Refund deadline is Aug. 22.

The delay is likely to cool down some of the heat generated by Jones and Cormier in the past few weeks. Aside from the numerous media appearances hyping up their pending grudge match, the UFC 178 media day brawl (relive it here) put interest at an all-time high.

Which appears to be for naught.

In addition, that keeps Alexander Gustafsson on the shelf for at least another three months, following his knee surgery. He's unlikely to risk his spot in line by taking another fight, but at the same time, the division will suffer with three of its top fighters riding the pine.

Sorry to be the bearer of bad news.

To see the revised UFC 178: "Johnson vs. Cariaso" fight card and rumors click here.