Ketlen Vieira’s Top Pressure Secured a Decision Over Macy Chiasson
Ketlen Vieira defeated Macy Chiasson by unanimous decision at UFC APEX in Las Vegas on May 31, 2025. The judges returned 29–28, 29–28 and 30–27 after a contest moved from bantamweight to featherweight because of Vieira’s weight-management difficulties.
The weight change altered the original conditions
Vieira weighed 146 pounds at the official weigh-in, while Chiasson weighed 144. UFC confirmed that the matchup would proceed at featherweight and that Vieira would forfeit twenty-five percent of her purse.
The fighters therefore competed under changed conditions rather than the originally advertised bantamweight assignment. The result remained a three-round decision, with every judge favoring Vieira overall.
Top position limited Chiasson’s replies
Vieira began with effective standing offense before using her strength from top position during the later rounds. Chiasson attempted to answer from underneath, but Vieira generally kept the exchanges controlled.
That pressure reduced the opportunities for Chiasson to build sustained attacks. The final scorecards rewarded Vieira’s overall work, including one judge awarding her every round.
The win followed a difficult championship-level test
Vieira had lost a unanimous decision to Kayla Harrison in October 2024. Her previous victory came against Pannie Kianzad in July 2023, also through a unanimous verdict.
Her record already included wins over former champions Miesha Tate and Holly Holm. Defeating Chiasson restored winning momentum after the Harrison setback and added another full-distance result against an established opponent despite the disrupted weight arrangements.
Sources
- UFC: weights, featherweight change and purse penalty
- UFC: standing offense and top pressure
- UFC: Harrison, Kianzad, Tate and Holm results
- UFC: official decision and scores
Article Tags
Ketlen Vieira, Macy Chiasson, UFC, MMA
