Perez announced the news himself via Instagram:
Im so heartbroken to announce that I have to pull out of my fight in September. Due to a injury. This was a hard decision but can’t risk injuring myself more. I want to apologize to everyone friends family and all my sponsors! Thanks for the support, I’ll be back better than ever! Sponsor if you need money back please send me a DM so I can send it back to you. ------
UFC officials are seeking a replacement fighter for Pettis to compete against, as he is expected to remain on the card at this time.
UFC Fight Night Mexico City takes place on Saturday, September 21 from the Arena Ciudad de Mexico in Mexico City, Mexico with Yair Rodriguez and Jeremy Stephens headlining. Fightful is providing live coverage of the event, which streams live on ESPN+.