Vazquez, a former King of the Cage and Gladiator Challenge champion, said the bout will kick off a five-fight contract he agreed to with the promotion on Thursday. Vazquez expects to ink the deal shortly.
Vazquez defeated Mark Kergosien with a 19-second guillotine choke on June 27 at Ultimate Chaos in Biloxi, Miss. Vazquez (13-2) was set to face American Top Team product Din Thomas on the card, but he bout was scrapped after Thomas failed to make weight.
Davis (13-2) will return to action for the first time since dropping a unanimous decision to Michihiro Omigawa in Sengoku last March.