Zuffa previously hosted the final World Extreme Cagefighting event, WEC 53, in nearby Glendale in 2010.
However, Formiga was forced to pull out of the fight due to injury and was replaced by UFC newcomer Willie Gates.
He was given additional time to make the lightweight limit, but made no attempt to cut further.
[11] ^ Diaz was fined $4,000, 20 percent of his purse for failing to make the required weight for his fight with Rafael dos Anjos.
[11] < Bout did not take place as Brunson was unable to compete after becoming ill the day of the fight.