Undefeated No More: List Of Every UFC Fighter Who Lost Their ‘O’ In 2025 So Far

Everyone knows an undefeated record in mixed martial arts (MMA) is a rare and precious commodity that can significantly elevate a fighter’s career. 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.

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 “0” will eventually vanish.

With that in mind, let’s look at who lost their pristine undefeated record in the 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, lost a unanimous decision to Christian Rodriguez on the first UFC 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.

Photo by Jeff Bottari/Zuffa LLC

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.

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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 UFC veteran Raoni Barcleos at UFC 311, dropping a unanimous decision—stalling his hype train for now. Talbott was a -1100 betting favorite.

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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, which resulted in him getting outstruck by Muin Gafurov.

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Clayton Carpenter (8-1)

UFC 311
Opponent: Tagir Ulanbekov

UFC Flyweight Clayton Carpenter kicked off UFC 311 by losing a unanimous decision against Top 15-ranked Tagir Ulanbekov.

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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.” The 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 contender Tatiana Suarez got her long-awaited UFC strawweight title shot at UFC 312 but whiffed and got dominated by defending champion Weili Zhang.

Photo by Jeff Bottari/Zuffa LLC

Kody Steele (7-1)

UFC 312
Opponent: Rongzhu

Top prospect and Brazilian jiu-jitsu ace Kody Steele, who was a 3 to 1 favorite over Chinese fighter Rongzhu, lost a unanimous decision on the “Prelims” of UFC 312.

He got an extra $50k for Fight of the Night, though.

Photo by Jeff Bottari/Zuffa LLC

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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UFC Seattle
Opponent: Rob Font

Brazilian prospect Jean Matsumoto stepped up on short notice to take on Top 10 Bantamweight 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” Julius Walker also stepped up on short notice to take on No. 14 ranked 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 Josh Van on the UFC 313 “Prelims.”

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Diyar Nurgozhay (10-1)

UFC Vegas 104
Opponent: Brendson Ribeiro

Three undefeated Contender Series contract winners at UFC Vegas 104 were finished. Firstly, 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 favorite (-800) on 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 UFC debut because of her viral knockout on Contender Series; however, she got knocked out in under two minutes by Carli Judice (watch highlights).

Photo by Jeff Bottari/Zuffa LLC

Mick Parkin (10-1)

UFC London
Opponent: Marcin Tybura

U.K. fighter Mick Parkin, ranked 15th, tried to snag Marcin Tybura’s No. 8 ranking at UFC London but lost a lousy split decision.

Stay tuned for more fighters that lost that coveted “0.”