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History · 2025 · UFC Fight Night: Blanchfield vs. Barber · Ketlen Vieira vs Macy Chiasson
From the tape · 31 May 2025

Ketlen Vieira vs Macy Chiasson

UFC Fight Night: Blanchfield vs. Barber · Las Vegas, Nevada, USA
Result

Ketlen Vieira beat Macy Chiasson

Method
Decision - Unanimous
Round
3 of 3
Clock
5:00
Women's FeatherweightMain cardReferee · Mark Smith

We published no prediction for this bout. Everything on this page is the official record and the tape it was fought on — the result, the round-by-round counts, the judges’ cards where they exist and the sportsbook line where one was published. Our graded calls start in 2026 and live on the public record.

Red corner KetlenVieira“Fenomeno”Nova Uniao · Manaus, Amazonas
VSOn the tape
Blue corner MacyChiassonFortis MMA · New Orleans, Louisiana
Women's Featherweight3 rounds31 May 2025
The story going in
  • Carries 28 points more takedown defence than Chiasson.
  • Comes in on a 2-fight win streak.
  • Has finished 5 of 8 UFC wins.
16-5
Record
11-6
33
Age
33
5' 8"
Height
+3″5' 11"
68″
Reach
+4″72″
Orthodox
Stance
Orthodox
+112
UFC bouts
11
1/812% of wins
Finishes
+50%5/862% of wins
Nova Uniao
Gym
Fortis MMA
Manaus, Amazonas
From
New Orleans, Louisiana
Vitals, record, nickname and camp come from the public UFC fighter register and are current, not a snapshot of fight night. UFC bouts, finish rate and every storyline line are counted off the official UFC fight record. A tick marks the side holding the raw edge in that row — longer reach, taller, younger, more bouts, a higher finish rate. It is a fact about the tape, not a prediction, and rows with no clean comparison (record, stance, gym, hometown) carry no tick at all. Any row we cannot fill on both sides is left out rather than half-drawn. Streaks, bout counts and finish rates are as they stood going into this fight — this bout and everything after it is excluded from the count.

Round by round

Every round the fight went, shaded by where the significant strikes actually landed — the takedowns, control time and knockdowns beside them, and how the three judges scored that round.

UFCStats · per round

3 rounds of tape

Round 15:00 of action
Ketlen Vieira18 sig landed
HEAD83%15 of 44BODY17%3 of 3LEGS0%0 of 1
Macy Chiasson17 sig landed
HEAD29%5 of 16BODY29%5 of 7LEGS41%7 of 8
18 of 48
Sig.
strikes
17 of 31
0 of 0
Take-
downs
0 of 0
1:06
Control
0:08
Distance 13Clinch 5Ground 0
Where it
happened
Distance 17Clinch 0Ground 0
Judges · this round · Vieira firstMichael Bell10–9Sal D'Amato10–9Chris Leben9–10
Round 25:00 of action
Ketlen Vieira2 sig landed
HEAD100%2 of 4BODY0%0 landedLEGS0%0 landed
Macy Chiasson0 sig landed
HEAD0%0 of 1BODY0%0 landedLEGS0%0 landed

No significant strikes landed — 1 thrown

2 of 4
Sig.
strikes
0 of 1
0 of 1
Take-
downs
0 of 2
4:47
Control
0:07
Distance 0Clinch 0Ground 2
Where it
happened
Distance 0Clinch 0Ground 0
Judges · this round · Vieira firstMichael Bell10–9Sal D'Amato10–9Chris Leben10–9
Round 35:00 of actionEnded 5:00
Ketlen Vieira8 sig landed
HEAD100%8 of 12BODY0%0 landedLEGS0%0 landed
Macy Chiasson5 sig landed
HEAD60%3 of 8BODY20%1 of 2LEGS20%1 of 1
8 of 12
Sig.
strikes
5 of 11
0 of 0
Take-
downs
0 of 2
4:13
Control
0:18
Distance 2Clinch 0Ground 6
Where it
happened
Distance 3Clinch 2Ground 0
Judges · this round · Vieira firstMichael Bell9–10Sal D'Amato10–9Chris Leben10–9

Significant strikes, takedowns, control time, knockdowns and submission attempts exactly as UFCStats recorded them for this bout, round by round. Zone percentages are that round’s landed head, body and leg counts over their own total — raw arithmetic, nothing modelled or smoothed. A round in which a fighter landed nothing shades empty and reads zero; it is never filled in from the round before.

The cards, totalled

The judges’ final totals, the media’s cards beside them, and how these judges usually score. Their round-by-round 10–9s are with the rounds above.

Official card

Unanimous Decision

Referee · Mark Smith
Ketlen VieiraMacy Chiasson
Official totals — Ketlen Vieira first
JudgeTotal
Michael Bell29–28
Sal D'Amato2.1 avg spread · 46% wide30–27
Chris Leben29–28

Each judge’s round-by-round scores sit with the round they belong to, in the round-by-round section above — switch a round there and the three cards for it change with the stats.

Media cards — 11 scored, Ketlen Vieira first · unofficial

Jay Pettry Sherdog.com30–27
Brian Knapp Sherdog.com30–27
Tyler Treese Sherdog.com30–27
Paul Fontaine WrestlingObserver.com30–27
Ryan Frederick WrestlingObserver.com30–27
Keith Shillan Sherdog.com30–27
Combat Press.com30–27
Dayne Fox Sherdog.com30–27
Zane Simon The MMA Vivisection30–27
Steve Duncan mma.uno30–27
MM AMania.com30–27

Fan vote · unofficial

30-27 Vieira · 40%29-28 Chiasson · 32%29-28 Vieira · 28%

25 fan cards submitted to MMA Decisions.

Official cards come from the UFCStats fight record and MMA Decisions. Media cards and the fan vote are MMA Decisions’ own collection and are not official. Judge tendency figures are that judge’s whole recorded history, not this bout — they are context for how a card was scored, never a claim that it was scored wrongly.

Takedowns

Takedowns

The level change — head to head

Career UFC takedown rates. Red corner left, blue corner right.

Ketlen Vieira

1.31takedowns / 15 min
1.31 / 15m
TAKEDOWNS
1.87 / 15m
3.12 / 15m
ATTEMPTS
5.34 / 15m
42%
ACCURACY
35%
0.50 / 15m
SUB ATT
0.40 / 15m

Macy Chiasson

1.87takedowns / 15 min

Career UFC takedown rates exactly as UFCStats publishes them: takedowns landed per 15 minutes, completion rate, submission attempts per 15 minutes, and the share of takedowns tried on them that they stuffed. Attempts per 15 is the one derived figure — landed ÷ completion rate — and it is omitted wherever either input is missing. UFCStats writes 0% where no attempt was recorded at all, so a percentage of exactly zero reads “n/a” here rather than as a measured rate. “Field” is the average fighter in that weight class, or across every division where a class is too small to average. Rate bars run to the population’s 95th percentile (5.00 takedowns / 15m); a fighter above it pins the bar. Percentages are drawn on their own axis.

Ranked in Women's Bantamweight

The market story

Where the price started and where it finished — the sportsbook consensus, with the vig removed. We captured no price series for this bout, so there is no chart to draw.

Ketlen Vieira↓ −9.5pp
open 52.5%close 43.1%
Macy Chiasson↑ +9.5pp
open 47.5%close 56.9%
0%50%100%
OpenClosing consensus (BFO, vig removed)

Ketlen Vieira opened at 52.5% and closed at 43.1% (−9.5pp), with Macy Chiasson moving the other way by the same amount — the two are one de-vigged pair, so they always sum to 100%. There is no line between those two points because nobody recorded one: we hold the open and the close for this bout, not the days in between.

Show the numbers
CornerOpen (US)Close (US)Open %Close %Move
Ketlen Vieira-12412252.5%43.1%−9.5pp
Macy Chiasson100-14747.5%56.9%+9.5pp
Opening and closing moneylines from BestFightOdds (data/refs/bfo_fighter_moneylines.csv), one row per fighter per bout, de-vigged pairwise so the two corners sum to 100% · dated 2025-06-01 on the odds record (1d from the card date; the nearest day inside a two-day window is used, never a guess) · scraped 2026-06-10. No price series was captured for this bout, so no line is drawn between the two points.
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