Ketlen Vieira vs Macy Chiasson

May 31, 2025 · ESPN+

DateMay 31, 2025

DivisionFight card

StatusScheduled

VenueUFC APEX

BroadcastESPN+

Start times & how to watch

Start time & how to watch

Main card starts Saturday, May 31, 2025 — watch on ESPN+.

US East (ET): Sat 9:00 PM
US West (PT): Sat 6:00 PM
United Kingdom: Sun 2:00 AM
Central Europe: Sun 3:00 AM
Australia (Sydney): Sun 11:00 AM
Your time

Ketlen VieiraFenomeno |16-6-0Ketlen Vieira vs Macy ChiassonMacy Chiasson10-6-0

Ketlen VieiraFenomeno16-6-0

Fight Overview

Round3

Time5:00

16-6-0Record10-6-0

35Age35

5'9"Height5'11"

68"Reach72"

135 lbsWeight135 lbs

Fight cardWeight ClassFight card

Macy Chiasson10-6-0

Combat Edge Intelligence

Fight Intelligence

Ketlen Vieira owns a 50-point Elo edge (good). Neither side shows more surface-level statistical edges across the tracked UFC categories. 3 shared opponents give extra context.

Compare Ketlen Vieira and Macy Chiasson across their careers →

Elo Recent career Elo trajectory

Recent three-year Elo paths for both fighters. Ratings shown here are current career context; the event-specific prediction or verified result remains on this Fight page.

Ketlen VieiraMacy Chiasson

Recent form

Ketlen VieiraL W L W L · +2 Elo last 5

LWLWL

Macy ChiassonL L L W W · -5 Elo last 5

LLLWW

Elo edge

Ketlen Vieira1663-8 last move

Macy Chiasson1613-14 last move

Why they are ranked here

Ketlen Vieira#2 of 4 active Women Featherweight fighters · 1663 Elo

Biggest gain: Beat Miesha Tate (rated 1667 at the time): +27.
Costliest loss: Lost to Yana Santos (rated 1646 at the time): -24.
Last 5 fights: 2 wins, 3 losses, +2 Elo in total.
Next places: 199 points behind #1 Cris Cyborg, 34 ahead of #3 Sara Collins.

Macy Chiasson#27 of 62 active Women Bantamweight fighters · 1613 Elo

Biggest gain: Beat Shanna Young (rated 1594 at the time): +23.
Costliest loss: Lost to Raquel Pennington (rated 1623 at the time): -31.
Last 5 fights: 2 wins, 3 losses, -5 Elo in total.
Next places: 0 points behind #26 Luana Carolina, 3 ahead of #28 Klaudia Syguła.

Every rated fight moves a rating by an amount set by the opponent's rating at the time, the result and how it ended. Places are counted among fighters active in the last 24 months. How the rating is calculated

Fight intelligence

Model forecast and your pick

Inspect the model’s probability and Elo baseline, then make your own call before the card starts.

What's at stake

Ketlen VieiraNow 1663 · #2 Women Featherweight

Wins by decision+14→ 1677

Loses by decision-18→ 1645

Macy ChiassonNow 1613 · #27 Women Bantamweight

Wins by decision+18→ 1631

Loses by decision-14→ 1599

What-if simulatorPremium

Pick the winner and how the fight ends to see both new ratings, both new division ranks, and who each fighter would pass.

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Projected with the same rules as the rankings, at today's ratings. Split decisions move ratings less and finishes more.

Stat advantages

Ketlen VieiravsMacy Chiasson

Takedown accuracy

17%vs0%

Takedown defense

90%vs63%

Takedown average

1.31vs1.87

Sig. strikes absorbed per min

3.73vs2.76

Finishing profile

Ketlen Vieiradecision leads 63% of wins

Macy Chiassondecision leads 40% of wins

Common opponents

Yana Santos Ketlen Vieira: loss · Decision (Unanimous) · Feb 20, 2021 Macy Chiasson: loss · Decision (Unanimous) · Oct 4, 2025

Pannie Kianzad Ketlen Vieira: win · Decision (Unanimous) · Jul 22, 2023 Macy Chiasson: win · Submission (Rear Naked Choke) · Mar 16, 2024

Yana Santos Ketlen Vieira: loss · Decision (Unanimous) · Feb 20, 2021Macy Chiasson: cancelled · Cancelled Bout · Jul 1, 2023

Tale of the tape

Ketlen VieiraMacy Chiasson

Tracked UFC statistics may not cover a fighter's full career. Unavailable measurements are not zero.

2.71Sig. strikes landed per min3.21

UFC bantamweight average : 3.71

40Sig. strike accuracy46

UFC bantamweight average : 45%

3.73Sig. strikes absorbed per min2.76

UFC bantamweight average : 3.75

51Sig. strike defense45

UFC bantamweight average : 54%

1.31Takedown average1.87

UFC bantamweight average : 1.51

17Takedown accuracy0

UFC bantamweight average : 26%

90Takedown defense63

UFC bantamweight average : 61%

0.52Submission average0.39

UFC bantamweight average : 0.52

2Wins by knockout3

4Wins by submission3

10Wins by decision4

1Losses by knockout1

0Losses by submission1

5Losses by decision4

Ketlen Vieira vs Macy Chiasson is a scheduled Fight card fight on UFC FIGHT NIGHT : BLANCHFIELD VS BARBER. Ketlen Vieira enters with a 16-6-0 record and Macy Chiasson enters with a 10-6-0 record. Combat Edge tracks the matchup preview, UFC stats, Elo edge, shared opponents, event date, venue, and full fight card.