Who is the only fighter to have defeated Claressa Shields in her boxing career?

Umar
Claressa Shields. [via Getty Images]
Claressa Shields has never allowed an opponent to get the better of her in professional boxing circuit. [Image courtesy: Getty Images]

Boxing icon Claressa Shields is undefeated as a pro boxer with a perfect 13-0 record. She also competed as a mixed martial artist in the PFL and tasted defeat in that sport. But has Shields never suffered a defeat in the boxing ring? If yes, then who defeated her in the sport? Let's explore.

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Who defeated Claressa Shields?

At the 2012 Women's World Championships held in China, Claressa Shields suffered her only amateur loss at the hands of Savannah Marshall. Subsequently, she was eliminated from the tournament and had to wait another two years before claiming gold.

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Both boxers have since progressed to become world champions, but Shields continued to seek her revenge. After years of constant verbal exchanges, the two met on October 15, 2022, at the O2 Arena in London.

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Marshall found success only when she tried to impose her size and strike Shields' body. However, it wasn't enough, as Shields took most of the rounds and won by a clear margin according to all three judges' scorecards.

The win awarded Claressa Shields a new belt to add to her ever-growing collection, the WBO female middleweight title, and some sweet revenge.

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Who defeated Claressa Shields in MMA?

Claressa Shields competed in MMA from 2021 to 2024, amassing a professional MMA record of 2-1. The only loss of Shields' professional MMA career came against Abigail Montes at PFL 10 in October 2021.

Shields was expected to emerge victorious. However, Montes' grappling skills proved decisive in neutralizing Shields' striking game. After a relatively close two rounds in the lacklustre bout, Montes secured a takedown at a crucial point in Round 3, controlling Shields from the top position. Two of the three judges scored the contest in Montes' favor, declaring her the winner by split decision.

Shields returned to MMA competition after more than two years of absence and defeated Kelsey DeSantis by split decision at the PFL vs. Bellator event in February 2024. In May 2025, Shields announced her retirement from MMA competition.

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Edited by Avinash Tewari
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