UFC Fight Night: Pettis vs. Moreno

UFC Fight Night: Pettis vs. Moreno (also known as UFC Fight Night 114) was a mixed martial arts event produced by the Ultimate Fighting Championship held on August 5, 2017, at Arena Ciudad de México in Mexico City, Mexico.

Background
A flyweight bout between Sergio Pettis and Brandon Moreno headlined the event.

Chris Gruetzemacher was expected to face The Ultimate Fighter: Latin America 3 lightweight winner Martín Bravo at the event. However, Gruetzemacher pulled out of the fight on July 18 with an injury and was replaced by promotional newcomer Humberto Bandenay.

A featherweight contest between Hacran Dias and Zabit Magomedsharipov was scheduled to take place at this event, but Magomedsharipov was moved to a fight against Nick Hein at the UFC Fight Night: Struve vs. Volkov event in Rotterdam in September. In turn, Hacran Dias was removed from the card entirely.

At the weigh-ins, Alexa Grasso came in at 119 lb, three pounds over the strawweight limit of 116 lb. As a result, she was fined 20% of her purse, which went to Randa Markos and their bout proceeded at a catchweight.

This was the last event called by longtime color commentator and former fighter Brian Stann.

Bonus awards
The following fighters were awarded $50,000 bonuses:
 * Fight of the Night: None awarded
 * Performance of the Night: Niko Price, Humberto Bandenay, Dustin Ortiz, and Joseph Morales

Aftermath
On November 1, USADA announced a finding of no-fault after Moreno failed a drug test. He tested positive for trace amounts of the banned substance clenbuterol in an in-competition test in the early hours of the event. But after an investigation, USADA determined that the positive likely came from contaminated meat, an issue well known to the anti-doping agency.

With seven first-round finishes, this event ties the record for most first-round finishes in a single UFC event.