Just a week removed from their now infamous stare down, Jon Jones (20-1) and Daniel Cormier (15-0) will have to wait even longer before they can settle their grudge match.

It was announced earlier today, on America’s Pregame on Fox Sport 1, that Jones had suffered a leg injury in training after returning to his camp after the media tour, forcing him out of his UFC 178 bout, which was scheduled to take place Sep. 27 at the MGM Grand Garden Arena in Las Vegas, Nv. The fight will instead take place at UFC 182 on Jan. 3, 2015.

UFC 178 will still proceed forward as planned, but with a new main event. Demetrious Johnson will no longer co-headline UFC 177, a card featuring TJ Dillashaw vs. Renan Barao II. The flyweight champion will still defend his title against Chris Cariaso, but a month later as the main event of UFC 178.

According to Damon Martin at Fox Sports, Jone suffered an ankle injury and possible torn meniscus to his knee. Neither injury is supposedly severe enough to warrant surgery.

Jones has made a record seven-consecutive title defenses since first capturing the UFC Light-Heavyweight championship from Mauricio “Shogun” Rua at UFC 128 in 2011, and is widely considered the best pound-for-pound fighter on the planet. His list of past opponents include former champions Quinton “Rampage” Jackson, Lyoto Machida, Rashad Evans, and Vitor Belfort as well as No. 1-contender Alexander Gustafsson and most recently No.4 Glover Teixeira.

Cormier, currently ranked No. 2, is coming off a third-round stoppage of legendary fighter and two-division Pride FC Champion Dan Henderson. He has fought twice at 205-lbs after going undefeated as a heavyweight. The former Olympic wrestler first rose to fame by defeating former-UFC Champion Josh Barnett in the Strikeforce Heavyweight Grand Prix in 2012. Comier entered the tournament as an alternate and was a replacement for the injured Alistair Overeem. The tournament also featured Antonio “Bigfoot” Silva, Fedor Emelianenko, Febricio Werdum and Andre Arlovski.