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Everyone knows an undefeated record in mixed martial arts (MMA) is a rare and precious commodity that can significantly elevate a fighter’s career. Indeed, that coveted zero at the end of a record doesn’t just represent perfection — it builds a fighter’s mystique, boosts their marketability, and generates unparalleled hype among fans.
Some special fighters even live in imperfect denial … often.
However, MMA is an unforgiving sport where chaos reigns, and perfection is difficult to maintain. Losses are almost inevitable, and in all likelihood, someone’s pristine “O” will eventually vanish.
With that in mind, let’s look at who lost their pristine, undefeated records in Ultimate Fighting Championship (UFC) in 2025.
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Austin Bashi (13-1)
UFC Vegas 101
Opponent: Christian Rodriguez
One of the most hyped prospects in MMA, Austin Bashi, dropped a unanimous decision to Christian Rodriguez on UFC’s card of 2025, nuking his undefeated record.
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Magomed Gadzhiyasulov (9-1)
UFC Vegas 101
Opponent: Bruno Lopes
Magomed Gadzhiyasulov lost a unanimous decision to Bruno Lopes in a pretty awful fight. He has since been released from UFC.
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Umar Nurmagomedov (18-1)
UFC 311
Opponent: Merab Dvalishvili
UFC 311 saw four fighters lose their coveted undefeated records. The most notable was Umar Nurmagomedov, who lost a unanimous decision to Bantamweight champion, Merab Dvalishvili. He then got stomped while he was down.
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Payton Talbott (8-1)
UFC 311
Opponent: Raoni Barcelos
One of the most hyped UFC prospects, Payton Talbott, was dominated by Brazilian Octagon veteran, Raoni Barcleos, at UFC 311, dropping a unanimous decision and derailing his hype train … for now. Talbott was a mind-boggling -1100 betting favorite, too.
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Rinya Nakamura (9-1)
UFC 311
Opponent: Muin Gafurov
No one saw this one coming. Multi-time Japanese wrestling champion, Rinya Nakamura didn’t use his world-class grappling whatsoever at UFC 311, resulting in him getting out-struck by Muin Gafurov.
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Clayton Carpenter (8-1)
UFC 311
Opponent: Tagir Ulanbekov
UFC Flyweight up-and-comer, Clayton Carpenter, kicked off UFC 311 by losing a unanimous decision against Top 15-ranked Tagir Ulanbekov.
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Shara Magomedov (15-1)
UFC Saudi Arabia
Opponent: Michael Page
Only one fighter lost their undefeated record at UFC Saudi Arabia, but it was a big one: Shara “Bullet.” Indeed, the popular one-eyed fighter lost a competitive unanimous decision to “MVP.”
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Tatiana Suarez (10-1)
UFC 312
Opponent: Weili Zhang
No. 1-ranked women’s contender, Tatiana Suarez, got her long-awaited Strawweight title shot at UFC 312, but whiffed and got dominated by defending champion, Weili Zhang.
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Kody Steele (7-1)
UFC 312
Opponent: Rongzhu
Top prospect and Brazilian jiu-jitsu ace, Kody Steele — who was a 3:1 favorite over Chinese fighter, Rongzhu — lost a unanimous decision on UFC 312’s “Prelims” undercard.
He got an extra $50,000 for “Fight of the Night,” though.
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Colby Thicknesse (7-1)
UFC 312
Opponent: Aleksandre Topuria
UFC newcomers Colby Thicknesse and Aleksandre Topuria welcomed each other to the Octagon, but it was Topuria who ended up getting the unanimous decision win over Thicknesse.
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Jean Matsumoto (16-1)
UFC Seattle
Opponent: Rob Font
Brazilian prospect Jean Matsumoto stepped up on short notice to take on Top 10-ranked Bantamweight contender, Rob Font, at UFC Seattle, but ended up losing a very, very close split decision.
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Julius Walker (6-1)
UFC Seattle
Opponent: Alonzo Menifield
“Juicebox” also stepped up on short notice to take on No. 14-seeded Light Heavyweight Alonzo Menifield. For only doing MMA for a couple of years, Walker showed up and almost beat “Atomic,” but ultimately lost a split decision.
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Danny Barlow (9-1)
UFC Vegas 103
Opponent: Sam Patterson
UFC Welterweight Danny Barlow’s hype was upended when Sam Patterson knocked him out to kick off the UFC Vegas 103 main card (watch highlights).
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Rei Tsuruya (10-1)
UFC 313
Opponent: Joshua Van
Japanese Flyweight, Rei Tsuruya, lost a unanimous decision to surging contender, Joshua Van, on UFC 313’s “Prelims” undercard.
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Diyar Nurgozhay (10-1)
UFC Vegas 104
Opponent: Brendson Ribeiro
Three undefeated Contender Series contract winners were finished inside the distance at UFC Vegas 104. First, Diyar Nurgozhay — who missed weight by five pounds — got submitted with a kimura by Brazil’s Brendson Ribeiro (watch highlights).
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Josias Musasa (8-1)
UFC Vegas 104
Opponent: Carlos Vera
The biggest betting favorite (-800) at UFC Vegas 104, Josias Musasa, got head kicked and quickly submitted by Carlos Vera (watch highlights).
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Yuneisy Duben (6-1)
UFC Vegas 104
Opponent: Carli Judice
Yuneisy Duben had a ton of hype going into her Octagon debut because of her viral knockout on Contender Series; however, she got knocked out in less than two minutes by Carli Judice (watch highlights).
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Mick Parkin (10-1)
UFC London
Opponent: Marcin Tybura
United Kingdom heavyweight fighter, Mick Parkin — ranked No. 15 — tried to snag Marcin Tybura’sNo. 8 ranking at UFC London, but lost a lousy split decision.
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Luis Gurule (10-1)
UFC Vegas 105
Opponent: Ode Osbourne
UFC rookie, Luis Gurule, had a very good first round, but got finished by Octagon veteran, Ode Osbourne, with a nasty left hand (watch here).
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Daniel Marcos (17-1)
UFC Des Moines
Opponent: Montel Jackson
Peru’s Daniel Marcos had a shot to get into the UFC Top 15 Bantamweight rankings but ran into the criminally underrated Montel Jackson, who defeated him via unanimous decision.
The fight was pretty boring.
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Bo Nickal (7-1)
UFC Des Moines
Opponent: Reinier de Ridder
UFC super prospect Bo Nickal suffered his first professional loss to former ONE Championship two-division champion Reinier de Ridder, getting nuked with a nasty knee to the liver (watch highlights).
He was a -375 betting favorite.
Stay tuned for more fighters who lost that coveted “O” as this unforgiving sport continues to claim victims throughout the year.
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Mark Choinski (8-1)
UFC 316
Opponent: MarQuel Mederos
UFC newcomer Mark Choinski stepped up on short notice at UFC 316 but got his legs battered and lost a unanimous decision to MarQuel Mederos.
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Oumar Sy (11-1)
UFC Atlanta
Opponent: Alonzo Menifield
France’s Oumar Sy lost his undefeated record to Alonzo Menifield as a -715 favorite. He lost a brutally boring unanimous decision at UFC Atlanta.
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Hamdy Abdelwahab (4-1)
UFC Baku
Opponent: Mohammad Usman
Egypt’s Heavyweight Hamdy Abdelwahab lost a forgettable unanimous decision to Mohammdad Usman at UFC Baku.
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Alvin Hines (7-1)
UFC 317
Opponent: Jhonata Diniz
Stepping up on short notice, UFC rookie Alvin Hines lost a competitive unanimous decision to Brazil’s Jhonata Diniz to kick off UFC 317.
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Hyder Amil (11-1)
UFC 317
Opponent: Jose Delgado
It took 26 seconds for Hyder Amil to lose his undefeated record when Jose Delgado brutally knocked him out with a knee and follow-up elbows.
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Tallison Teixeira (8-1)
UFC Nashville
Opponent: Derrick Lewis
6’8” Tallison Teixeira headlined his first UFC main event in just his second UFC bout, but unfortunately, ran into Derrick Lewis, who stopped him in 35 seconds (watch highlights).
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Jackson McVey (6-1)
UFC 318
Opponent: Brunno Ferreira
6’4” Middleweight Jackson McVey had his UFC debut spoiled by Brazil’s Brunno Ferreira as he was submitted in under four minutes.
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Hyun Sung Park (10-1)
UFC Vegas 108
Opponent: Tatsuro Taira
Hyun Sung Park headlined his first UFC fight card on less than a week’s notice as he collided with Tatsuro Taira; however, the Korean Flyweight finisher got submitted in the second round (watch highlights).
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Alibi Idiris (10-1)
UFC 319
Opponent: Joseph Morales
Alibi Idiris lost his undefeated record and a chance at a six-figure deal at UFC 319, getting submitted by Joseph Morales in the TUF 33 Flyweight finale (watch highlights).
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Lone’er Kavanagh (9-1)
UFC Shanghai
Opponent: Charles Johnson
One of the best Flyweight prospects in the UFC right now, Lone’er Kavanagh suffered his first professional defeat devastatingly as Charles Johnsonknocked him unconscious at UFC Shanghai (watch highlights).
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