At UFC 320 in Las Vegas, Macy Chiasson suffered a unanimous decision loss to Yana Santos, struggling to impose her usual physicality and top control as Santos controlled the clinch and distance. The setback leaves Chiasson needing a win to steady her campaign in the bantamweight division.

A logical next bout for Chiasson is facing Argentina’s surging contender Ailín Pérez. Pérez is coming off a five-fight win streak and is building buzz as a legitimate dark horse in the division, most recently defeating Karol Rosa at UFC 311. For Chiasson, a matchup with Pérez is a crucial test to remain among the contenders, and for Pérez, it’s a chance to take out an established talent and potentially break into the top 10.

Stylistically, this is a clash between Chiasson’s length and grappling against Pérez’s relentless pressure and improving boxing. With both women chasing a spot among the top contenders, the bout would have major implications in the bantamweight hierarchy.

Last Five Fights – Macy Chiasson:

1. Loss to Yana Santos – Decision (unanimous), UFC 320 (October 4, 2025)
2. Loss to Ketlen Vieira – Decision (unanimous), UFC Fight Night (May 31, 2025)
3. Win over Mayra Bueno Silva – TKO (doctor stoppage), UFC 303 (June 29, 2024)
4. Win over Pannie Kianzad – Submission (rear-naked choke), UFC Fight Night (March 16, 2024)
5. Loss to Irene Aldana – KO (upkick to the body), UFC 279 (September 10, 2022)

Last Five Fights – Ailín Pérez:

1. Win over Karol Rosa – Decision (unanimous), UFC 311 (January 18, 2025)
2. Win over Darya Zheleznyakova – Submission (arm-triangle), UFC Fight Night (September 28, 2024)
3. Win over Joselyne Edwards – Decision (unanimous), UFC 302 (June 1, 2024)
4. Win over Lucie Pudilová – Decision (unanimous), UFC Fight Night (November 18, 2023)
5. Win over Ashlee Evans-Smith – Decision (unanimous), UFC on ESPN (July 15, 2023)

This matchup is a clear next step for both fighters and a pivotal clash for the future of the bantamweight division.