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Women's Featherweight

3 Rounds

Ketlen Vieira won · U-DEC R3

Elo1515

Elo1474

Ketlen VieiravsMacy ChiassonUFC Prediction Result

UFC Fight Night: Blanchfield vs. Barber · Saturday, May 31, 2025Las Vegas, Nevada, USA

Official fight result

Ketlen Vieira won

U-DEC · Round 3 · 5:00

Style matchupKetlen Vieira: Well-roundedvsMacy Chiasson: Well-rounded

Well-rounded vs well-rounded. Usually decided by who imposes their gameplan first.

Model Prediction: Macy Chiasson wins(57.4%)

Actual result: Ketlen Vieira wins · Model version: ufc_v6_2_pure_lightgbm_20260715_055615

Incorrect

Hypothetical $100 stake on the replay pick

Macy Chiasson at -144 American odds

−$100 profit

$0 total returned

Scouting Report

Auto-generated signals worth knowing before you read the deep stats below.

Ketlen Vieira has 28pp better takedown defense — controls where the fight happens.
Macy Chiasson has a 10cm reach advantage.

Tale of the Tape

Ketlen Vieira

Red Corner

Macy Chiasson

Blue Corner

+122

(45%)

Vegas Odds

-144

(59%)

1515

Elo

1474

Age

Orthodox

Stance

Orthodox

5'8"

Height

5'11"

172.72 cm

Reach

182.88 cm

Recent Form

Last 5 fights for each fighter — most recent on the right. Hover any result for the matchup.

Ketlen Vieira

oldest →

vs Raquel Pennington · Jan 23

vs Pannie Kianzad · Jul 23

vs Kayla Harrison · Oct 24

vs Norma Dumont · Nov 25

DECvs Jacqueline Cavalcanti · May 26

latest

Macy ChiassonL2 streak

oldest →

KOvs Irene Aldana · Sep 22

SUBvs Pannie Kianzad · Mar 24

KOvs Mayra Bueno Silva · Jun 24

vs Yana Santos · Oct 25

vs Ailin Perez · Feb 26

latest

Output & Defense Comparison

Rate-normalized career statistics. Bold side has the edge per metric.

Ketlen VieiraMetricMacy Chiasson

2.76

Strikes / min

3.21

3.75

Strikes absorbed / min

2.76

50%

Strike defense

44%

1.33

TDs / 15 min

1.87

90%

Takedown defense

62%

0.60

Sub atts / 15 min

0.40

Net striking (SLpM − SApM)

-0.99Δ 1.44 — meaningful gap+0.45

Statistical Profile

Career averages · bigger area = stronger across dimensions

Ketlen VieiraMacy Chiasson

Recent Elo Trajectory

Last 10 fights for each fighter, aligned right (most recent on the right).

Ketlen Vieira(10 fights)Macy Chiasson(10 fights)

Model Feature Differentials

Red − Blue for each engineered feature. Bar leans toward the stronger fighter.Hover a label to see what it measures.

ELO Rating

Red +40.5|Blue -40.5

Recent Form

Red -1.2|Blue +1.2

Striker Score

Red +0.0|Blue -0.0

EVEN

Grappler Score

Red +0.1|Blue -0.1

Layoff

Red -98.0|Blue +98.0

Red Corner advantageBlue Corner advantage

Strike Breakdown

Where the strikes landed. Head accuracy is the single strongest predictor of fight outcomes.

Ketlen VieiraTargetMacy Chiasson

By target zone

42% acc · 89%

Head

32% acc · 36%

100% acc · 11%

Body

67% acc · 27%

0% acc

Leg

89% acc · 36%

By position

32% acc · 54%

Distance

51% acc · 91%

83% acc · 18%

Clinch

50% acc · 9%

73% acc · 29%

Ground

Round-by-Round Scoring (Model)

Statistical round-winner heuristic based on strikes, takedowns, control time, and knockdowns. Not the official judges' scorecard.

Ketlen Vieira rounds

even

Macy Chiasson rounds

Round 1Ketlen Vieira edged it

Sig. strikes18

Takedowns0

Control1:06

17Sig. strikes

0Takedowns

0:08Control

Round 2Ketlen Vieira edged it

Sig. strikes2

Takedowns0

Control4:47

0Sig. strikes

0Takedowns

0:07Control

Round 3Ketlen Vieira edged it

Sig. strikes8

Takedowns0

Control4:13

5Sig. strikes

0Takedowns

0:18Control

Statistical round count agrees with the official result.

Fight Stats

Totals

28 / 64

Sig Strikes

22 / 43

51%

Sig Str %

33%

106 / 174

Total Strikes

52 / 77

0 / 1

TDs

0 / 4

TD %

Sub Att

Rev

10:06

Ctrl Time

0:33

Round-by-Round

Round	Fighter	Sig Str	Total Str	TD
1	Macy Chiasson	17 / 31	18 / 32	0 / 0
1	Ketlen Vieira	18 / 48	29 / 64	0 / 0
2	Macy Chiasson	0 / 1	9 / 10	0 / 2
2	Ketlen Vieira	2 / 4	39 / 56	0 / 1
3	Macy Chiasson	5 / 11	25 / 35	0 / 2
3	Ketlen Vieira	8 / 12	38 / 54	0 / 0

Ketlen Vieira

StanceOrthodox

Height68.0"

Reach68.0"

Fights14

Macy Chiasson

StanceOrthodox

Height71.0"

Reach72.0"

Fights14