Ailin Perez

Overview

Six of her seven UFC wins went to the scorecards, and the one that didn't ended in the first round.

Ailin Perez, "Fiona," fights at women's bantamweight out of MMA Science Academy and represents Argentina. Her UFC record is 7-1, and her professional record across all promotions is 14-2-0. She is not a champion. She carries a seven-fight winning streak into her next fight, and nearly all of it was built by going the distance.

One submission. Six decisions. One loss.

UFC Career

Perez debuted on September 2, 2022, at UFC Fight Night: Gane vs. Tuivasa against Stephanie Egger. It went badly. Egger submitted her in the second round at 4:54. That is the only loss on her UFC record.

She returned in July 2023 and has not lost in the UFC since. Ashlee Evans-Smith was first, a unanimous decision. Lucie Pudilova followed in November 2023, again by unanimous decision. In June 2024 at UFC 302, she took another unanimous decision over Joselyne Edwards.

Then came the finish. On September 28, 2024, Perez submitted Daria Zhelezniakova in the first round at 3:52. It is her only stoppage win in the UFC, and her only UFC fight to end in the first round.

The rest of the run went back to the scorecards. Karol Rosa at UFC 311 in January 2025, Macy Chiasson in February 2026, and Norma Dumont in September 2026 all ended in unanimous decisions. Our model tags Dumont as a strong opponent. She is the only opponent on Perez's UFC list who carries a tier in our data.

Seven wins in a row. Six of them went three rounds.

Fighting Style

Perez is a wrestling-based fighter who wins by controlling exchanges instead of trading. She rarely gets hit, and she scores takedowns at a high rate while being very hard to take down herself. She isn't a high-volume striker, landing less often than most UFC fighters, but she absorbs far less than most.

Her submission game is the quiet part of the profile. She attempts few submissions compared with the UFC average, so her grappling doesn't turn into a constant hunt for finishes.

The record backs that up. She is 7-1 in the UFC, and six of her seven wins came by decision. Her one finish was a first-round submission. She has won seven in a row and comes into her next fight on that streak.

Notable Wins

• Norma Dumont — unanimous decision, round 3, UFC Fight Night: Rosas Jr. vs. Barcelos (2026)
• Daria Zhelezniakova — submission, round 1 at 3:52, UFC Fight Night: Moicano vs Saint Denis (2024)
• Macy Chiasson — unanimous decision, round 3, UFC Fight Night: Moreno vs Kavanagh (2026)
• Karol Rosa — unanimous decision, round 3, UFC 311 (2025)

Quick Facts

• Division: Women's Bantamweight
• UFC record: 7-1 (1 submission win, 6 decision wins)
• Professional record (all promotions): 14-2-0
• UFC debut: 2022
• Stance: Switch
• Height and reach: 5'5", 66" reach
• Team: MMA Science Academy
• Born: CABA, Buenos Aires, Argentina