“Mini Ngannou” is staying on UFC 320.
Yesterday, top Middleweight prospect Ateba Gautier lost his opponent, Ozzy Diaz, to a mysterious but serious illness. But he didn’t have to wait long for a new dance partner. Gautier will now collide with Octagon newcomer Treston Vines in the UFC 320 “Prelims” headliner this weekend (Sat., Oct. 4, 2025) inside T-Mobile Arena in Las Vegas, Nevada.
The four-day short-notice booking was announced by Vines’ management team, Iridium Sports.
Gautier (8-1) has been violently flawless since earning his UFC contract on Contender Series, demolishing both of his opponents in under four minutes. That includes a devastating finish of Jose Medina at UFC Mexico City (watch highlights) and a crushing knockout of Robert Valentin at UFC 318 (watch highlights). This will mark Gautier’s third fight of 2025 as he looks to keep his meteoric rise alive.
Vines (10-3), meanwhile, enters the promotion riding a four-fight win streak with three stoppages — two of them in the first round — highlighted by a knockout victory over former Bellator fighter Ethan Hughes. The 32-year-old has a 70 percent finish rate with six knockouts and has fought in LFA, CFFC, and Ares Fight Series.
He steps in as a massive underdog; the opportunity represents the biggest moment of his young career. That said, Vines has been knocked three times in the first round … and Gautier boasts five first-round knockouts of his own.
Remember that MMAmania.com will deliver LIVE round-by-round, blow-by-blow coverage of the entire UFC 320 fight card, starting with the ESPN/ESPN+ “Prelims” matches online, which are scheduled to begin at 6 p.m. ET, before the main card start time at 10 p.m. ET (also on ESPN+).
To check out the latest and greatest UFC 320: “Ankalaev vs. Pereira” news and notes be sure to hit up our comprehensive event archive right here.
