Ketlen Vieira Fenomeno

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Fighter bio

Ketlen Vieira – General Profile

Ketlen “Fenômeno” Vieira is a Brazilian professional mixed martial artist competing in the UFC’s women’s bantamweight division. Born on August 26, 1991, in Manaus, Amazonas, Brazil, Vieira is known for her strong grappling base, judo and Brazilian jiu-jitsu skills, and grinding fight IQ. She has been a top contender in the division for years and remains one of the most technically complete fighters at 135 pounds.

MMA Career

Vieira began her professional MMA career in 2014 after training in Brazilian jiu-jitsu and judo from a young age. She made her UFC debut on October 2, 2016 and steadily climbed the ranks by defeating notable opponents including Sara McMann, Cat Zingano, Miesha Tate, and Holly Holm. Vieira earned title contention by stringing together victories over former champions and top contenders. In recent years, she faced Olympic judoka Kayla Harrison at UFC 307 and most recently competed against Macy Chiasson and Norma Dumont in late 2025, showcasing her experience and resilience in high-level competition. As of late 2025, she is ranked among the top bantamweights in the UFC.

Fighting Style

Vieira’s style blends strong grappling, judo throws, and Brazilian jiu-jitsu with effective striking and cage control. A black belt in both jiu-jitsu and judo, she uses clinch work, takedowns, and positional control to wear down opponents, often dictating where the fight takes place. Her well-rounded approach includes submission threats and steady striking to accumulate points and secure victories. She is known for her disciplined pace and ability to grind through long fights.

Recent Developments

In recent UFC appearances, Vieira has continued to compete against top 135-pound competition. She earned a unanimous decision win over Macy Chiasson in May 2025 and most recently fought Norma Dumont in November 2025, experiencing both victories and close losses against elite opponents. Her continued presence near the top of the rankings highlights her consistency and longevity in a deep women’s bantamweight division.

Personal Life

Outside the Octagon, Vieira began training in jiu-jitsu at age 12 before adding judo, eventually earning black belts in both disciplines. She has a competitive wrestling background and has been successful in national judo and grappling tournaments in Brazil. Known for her disciplined training and tactical mindset, she trains out of Nova União and remains a respected figure in women’s MMA.