‘Mini Ngannou’ remains on UFC 320 fight card, brave Octagon newcomer swoops in on just four days notice

“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.

LIVE! Watch UFC 320 PPV On ESPN+ Here!

LIGHT HEAVYWEIGHT TITLE REMATCH! Ultimate Fighting Championship (UFC) continues its 2025 pay-per-view (PPV) schedule on Sat., Oct. 4, 2025, with a blockbuster title fight set to headline UFC 320 from inside T-Mobile Arena in Las Vegas, Nevada. In UFC 320’s PPV main event, Light Heavyweight champion, Magomed Ankalaev, defends his title against No. 1-ranked contender, Alex Pereira, in a high-stakes, five-round rematch. UFC 320’s PPV co-main event features a Bantamweight title showdown between division champion, Merab Dvalishvili, and No. 1-ranked contender, Cory Sandhagen. UFC 320 will also showcase a Light Heavyweight clash between Jiri Prochazka vs. Khalil Rountree Jr., a Featherweight bout pitting Josh Emmett vs. Youssef Zalal, a Middleweight matchup featuring Abus Magomedov vs. Joe Pyfer, and much more! UFC 320’s start time is scheduled for 6 p.m. ET (“Early Prelims”), 8 p.m. ET (“Prelims” undercard), and 10 p.m. ET (PPV main card).

Don’t miss a single second of face punching action!

Where to Buy:

• Check price at STREAM UFC 320

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 checkout the latest and greatest UFC 320: “Ankalaev vs. Pereira 2” news and notes be sure to hit up our comprehensive event archive right here.