Photo: ESPN
Tale of the Tape
Age
31
Height
5' 5"
Reach
66"
Stance
Switch
Country
Argentina
Key Stats
88%
Win Rate
43%
Finish Rate
4
KO/TKO Wins
2
Submission Wins
4
Title Fight Wins
16
Pro Fights
Advanced Stats
Color = level vs. divisionStriking
Grappling
Career
Win Methods
At #5 in the women's bantamweight rankings, Ailin Perez — "Fiona" to fight fans — is past the "prospect" stage. This is contender territory, and every fight from here is a title eliminator in disguise.
The game is built on grappling: 4.9 takedowns per 15 minutes, and opponents spend rounds defending instead of fighting. 2 submission wins say what happens when the defense slips.
He arrives on a 5-fight win streak — most recently Macy Chiasson, Decision - Unanimous. Streaks like that don't stay unnoticed for long.
Recent Fights
Norma Dumont
Decision · Sep 26, 2026
Macy Chiasson
Decision - Unanimous · Feb 28, 2026
UFC Fight Night: Moreno vs. Kavanagh
Karol Rosa
Decision - Unanimous · Jan 18, 2025
UFC 311: Makhachev vs. Moicano
Daria Zhelezniakova
Submission (Arm Triangle) R1 · Sep 28, 2024
UFC Fight Night: Moicano vs. Saint Denis
Joselyne Edwards
Decision - Unanimous · Jun 1, 2024
UFC 302: Makhachev vs. Poirier
Latest / Ailin Perez News
Three Debutants, One Card: The Canadian Newcomers at UFC Edmonton
Daniel Perez (15-1), Louis Jourdain (9-3) and unbeaten Jiri Chovancek (9-0) all hit the Octagon for the first time Saturday at Rogers Place.
Oct 13, 2026
Rosas Jr. vs. Barcelos Headlines UFC Vegas 121 With Two 5-Fight Streaks on the Line
Raul Rosas Jr. and Raoni Barcelos both ride five-fight win streaks into the APEX main event, with a bantamweight title conversation waiting on the winner.
Sep 26, 2026
Norma Dumont's Perez Grudge: 'What I Want Without Getting Arrested'
Dumont says her Sept. 26 clash with #5 Ailin Perez is personal, promising a finish before the final horn and vowing this fight won't last 15 minutes.
Sep 24, 2026