The fallout from Jon Jones’ injury continues. With Demetrious Johnson’s flyweight title defense against Chris Cariaso moved to main event status for UFC 178 it left a gap in the co-main event for UFC 177, scheduled to take place on August 30 in Sacramento, Calif.

According to, lightweight fighters Danny Castillo (17-6) and Tony Ferguson (15-3) will serve as the August 30th’s co-headliners, marking an unprecedented upgrade in status from either fighters current standing. UFC 177 will be headlined by UFC Bantamweight Champion TJ Dillashaw as he makes his first title defense in a rematch against recently dethroned 135-lbs champion Renan Barao. Castillo-Ferguson was originally billed for the canceled UFC 176 fight card.

With both fighters hailing from California, the UFC appears hopeful that the increase in exposure will help draw a bigger crowd to the Sleep Train Arena, where the event will take place. Castillo, originally from San Francisco, fights out of Team Alpha Male in Sacramento. Ferguson is from Oxnard and now based out of Ventura.

Castillo will be making his eleventh-UFC appearance, and was a staple in the WEC prior to the merger, having fought eight times under their sister promotions banner. He holds wins over Ricardo Lamas, Dustin Poirier, Pual Sass and Tim Means. The longtime Zuffa-veteran has also entered the cage with current UFC Lightweight Champion Anthony Pettis and perennial-contender Donald Cerrone, coming up short in both encounters.

Ferguson, winner of The Ultimate Fighter 13 as a welterweight, is now 5-1 in the UFC with his most recent loss at the hands of No. 10-ranked fighter Michael Johnson. Four of his five most recent wins have come by way of first-round stoppage. Currently on a two-fight win streak, he will look to improve his overall record and keep the streak going.