Matt Mitrione and Brendan Schaub will have to wait a little longer to tangle inside the Octagon.

The heavyweight fight, which was scheduled to take place July 27 at UFC on FOX 8, has been pulled from the card after Mitrione suffered an injury in training, according to sources close to the fight. The same sources indicated that the UFC was leaning towards re-booking the fight on a later card, and as a result, they decided to pull Schaub from the event in Seattle altogether.

Mitrione (6-2) is coming off a 19-second knockout of Phil De Fries in April, while Schaub (9-3) most recently defeated Lavar Johnson via unanimous decision in February. The heavyweights were cast members on the tenth season of The Ultimate Fighter in 2009.

UFC on FOX 8, headlined by Demetrious Johnson vs. John Moraga for the UFC flyweight belt, will now feature 12 fights.