Macy Chiasson delivered a spirited performance at UFC on ESPN 68 on May 31, 2025, but came up short against Ketlen Vieira, losing via unanimous decision in a featherweight bout. The 33-year-old American showcased her trademark aggression with early leg kicks and movement, but Vieira’s counterstriking and dominant grappling, especially in Round 2, secured the win with scores of 29-28, 29-28, and 30-27. Chiasson’s strong Round 3 effort, landing elbows from the bottom, highlighted her resilience despite the loss, leaving her with a professional record of 10–4.
Coming off a two-fight win streak prior to this setback, including a TKO over Mayra Bueno Silva and a submission of Pannie Kianzad, Chiasson remains a top contender in the UFC women’s bantamweight division, where she is ranked #5. Her versatility across bantamweight and featherweight makes her a dangerous matchup for many in the division.
Next up for Macy Chiasson should be a bantamweight rematch with Mayra Bueno Silva. Bueno Silva, ranked #8 in the bantamweight division, faced Chiasson at UFC 303 on June 29, 2024, where Chiasson won via TKO (doctor stoppage) in Round 2, earning a Performance of the Night bonus. Since that loss, Bueno Silva dropped a unanimous decision to Jasmine Jasudavicius at flyweight but is expected to return to bantamweight. A rematch offers Bueno Silva a chance to even the score and Chiasson an opportunity to solidify her standing with another high-profile win.
This matchup makes sense given their competitive first encounter and the stakes in the bantamweight division. Chiasson’s aggressive striking and submission skills will face Bueno Silva’s dangerous grappling and submission game, promising a thrilling clash. The fight could serve as a main card bout on a UFC Fight Night or a featured prelim on a PPV, with the winner potentially earning a shot at a top-3 opponent or a title eliminator.
Last Five Fights (Macy Chiasson):
1. Loss to Ketlen Vieira – Decision (unanimous), UFC on ESPN: Gamrot vs. Klein (May 31, 2025)
2. Win over Mayra Bueno Silva – TKO (doctor stoppage), UFC 303 (June 29, 2024)
3. Win over Pannie Kianzad – Submission (rear-naked choke), UFC Fight Night: Tuivasa vs. Tybura (March 16, 2024)
4. Loss to Irene Aldana – KO (upkick to the body), UFC 279 (September 10, 2022)
5. Win over Norma Dumont – Decision (split), UFC 274 (May 7, 2022)
Last Five Fights (Mayra Bueno Silva):
1. Loss to Jasmine Jasudavicius – Decision (unanimous), UFC Fight Night: Adesanya vs. Imavov (February 1, 2025)
2. Loss to Macy Chiasson – TKO (doctor stoppage), UFC 303 (June 29, 2024)
3. Loss to Raquel Pennington – Decision (unanimous), UFC 297 (January 20, 2024)
4. No Contest vs. Holly Holm – Overturned (originally submission win), UFC on ESPN: Holm vs. Bueno Silva (July 15, 2023)
5. Win over Lina Länsberg – Submission (kneebar), UFC Fight Night: Andrade vs. Blanchfield (February 18, 2023)
