The main event was a
UFC Flyweight Championship bout between champion
Demetrious Johnson and top contender
John Moraga. The pairing was originally expected to take place on April 13, 2013 at
The Ultimate Fighter 17 Finale. However, Johnson was forced out of the bout with an injury and Moraga was pulled from that event as well.
Michael Chiesa was originally set to face
Reza Madadi on this card. However, on May 14, 2013, it was announced Madadi pulled out of the bout citing alleged visa issues and was replaced by
Jorge Masvidal.
Miesha Tate was pulled from her scheduled bout with
Liz Carmouche to participate as coach on The Ultimate Fighter 18 and was replaced by
Jéssica Andrade.
Tarec Saffiedine was expected to make his promotional debut at this event opposite
Robbie Lawler; however, Saffiedine was forced out of the bout with an injury and was replaced by
Siyar Bahadurzada. On July 11, it was announced that Bahadurzada also pulled out of the bout and was replaced by
Bobby Voelker.
Matt Mitrione was expected to face
Brendan Schaub at the event. However, in mid-July, Mitrione pulled out of the bout citing an injury and Schaub was pulled from the event as well with the pairing rescheduled to
UFC 165.
Danny Castillo was expected to face
Bobby Green at the event, however, in mid-July, Green pulled out of the bout citing an injury and was replaced by
Tim Means.
Yves Edwards was expected to fight
Spencer Fisher on this card. However, on July 11, Fisher was removed from the bout due to injury and replaced by
Daron Cruickshank. Both
John Albert and
Tim Means missed weight for their respective fights; rather than use time to cut additional weight, both men forfeited 20 percent of their purses to their opponent and the bouts were made catchweight affairs. ==Results==