Ultimate Fighting Calendar
UFCUFC Fight Night: Gamrot vs Klein
Women's Featherweight3 rounds scheduled
WIN
Ketlen Vieira
BrazilKetlen Vieira
“Fenomeno”
16-5-0
RESULT

Ketlen Vieira def. Macy Chiasson (Unanimous Decision)

Unanimous Decision · Round 3 · 5:00
Macy Chiasson
United StatesMacy Chiasson
11-6-0
Saturday, May 31, 2025
Meta Apex, Las Vegas, United States

Ketlen Vieira defeated Macy Chiasson by Unanimous Decision in round 3 (5:00) in the Women's Featherweight bout of UFC Fight Night: Gamrot vs Klein, held Saturday, May 31, 2025 at Meta Apex, Las Vegas.

Fight stats

Ketlen Vieira
Macy Chiasson
0
Knockdowns
0
28 of 64
Significant strikes
22 of 43
44%
Sig. strike accuracy
51%
106 of 174
Total strikes
52 of 77
0 of 1
Takedowns
0 of 4
0%
Takedown accuracy
0%
0
Submission attempts
0
0
Reversals
0
10:06
Control time
0:33
Significant strikes by target
25 of 60
Head
8 of 25
3 of 3
Body
6 of 9
0 of 1
Leg
8 of 9
15 of 47
Distance
20 of 39
5 of 6
Clinch
2 of 4
8 of 11
Ground
0 of 0

By round

ROUND 1
0
KD
0
18 of 48
Sig. str.
17 of 31
29 of 64
Total str.
18 of 32
0 of 0
Takedowns
0 of 0
0
Sub. att
0
1:06
Ctrl
0:08
ROUND 2
0
KD
0
2 of 4
Sig. str.
0 of 1
39 of 56
Total str.
9 of 10
0 of 1
Takedowns
0 of 2
0
Sub. att
0
4:47
Ctrl
0:07
ROUND 3
0
KD
0
8 of 12
Sig. str.
5 of 11
38 of 54
Total str.
25 of 35
0 of 0
Takedowns
0 of 2
0
Sub. att
0
4:13
Ctrl
0:18

Judges' Scorecards

Michael Bell
#VieiraChiasson
1109
2109
3910
Total2928
Sal D'Amato
#VieiraChiasson
1109
2109
3109
Total3027
Chris Leben
#VieiraChiasson
1910
2109
3109
Total2928

Media Scores

11
Vieira
–
0
Chiasson
●30–27 Vieira×11
All 11 media scorecards▾

Fan Scorecards

68%
Vieira
32%
Chiasson
25 fan scorecards submitted
●30–27 Vieira40%●29–28 Chiasson32%●29–28 Vieira28%
Fans' round-by-round verdict
R1
64%
Vieira
R2
100%
Vieira
R3
56%
Chiasson

Scorecard data via mmadecisions.com

Frequently asked questions

Who won Ketlen Vieira vs Macy Chiasson?

Ketlen Vieira defeated Macy Chiasson by Unanimous Decision in round 3 (5:00) in the Women's Featherweight bout of UFC Fight Night: Gamrot vs Klein, held Saturday, May 31, 2025 at Meta Apex, Las Vegas.

What were the judges' scorecards for Ketlen Vieira vs Macy Chiasson?

The judges scored it 29–28, 30–27, 29–28 — Ketlen Vieira won the decision.

Referee
Mark Smith
Time format
3 Rnd (5-5-5)
Pre-fight comparison▾

Win probability

Ketlen Vieira 44%56% Macy Chiasson

What the model gave each fighter going into the fight, from their pre-fight UFCal Elo ratings. See all Elo ratings

Tale of the Tape

16-5-0
Record
11-6-0
1553
Elo rating
1594
1
Win Streak
0
34
Age
34
5'8"
173 cm
Height
5'11"
180 cm
68"
173 cm
Reach
72"
183 cm
Orthodox
Stance
Orthodox
Women's Featherweight
Weight Class
Women's Featherweight
Brazil
Nationality
United States

Striking Profile

2.71
SLpM
3.21
40%
Str. Acc.
46%
3.73
SApM
2.76
50%
Str. Def.
44%

Grappling Profile

1.31
TD Avg.
1.87
42%
TD Acc.
35%
90%
TD Def.
62%
0.50
Sub. Avg.
0.40

Recent form (last 5 fights)

Ketlen Vieira · 3-2
  • W
    Jacqueline Cavalcanti
    UFC Fight Night: Allen vs CostaSat, May 16, 2026
    Unanimous Decision · R3 · 5:00 · Women's Bantamweight
  • L
    Norma Dumont
    UFC Fight Night: Garcia vs OnamaSat, Nov 1, 2025
    Split Decision · R3 · 5:00 · Women's Bantamweight
  • W
    Macy Chiasson
    UFC Fight Night: Gamrot vs KleinSat, May 31, 2025
    Unanimous Decision · R3 · 5:00 · Women's Featherweight
  • L
    Kayla Harrison
    UFC 307: Pereira vs Rountree Jr.Sat, Oct 5, 2024
    Unanimous Decision · R3 · 5:00 · Women's Bantamweight
  • W
    Pannie Kianzad
    UFC Fight Night: Aspinall vs TyburaSat, Jul 22, 2023
    Unanimous Decision · R3 · 5:00 · Women's Bantamweight
Macy Chiasson · 2-3
  • L
    Ailin Perez
    UFC Fight Night: Moreno vs KavanaghSat, Feb 28, 2026
    Unanimous Decision · R3 · 5:00 · Women's Bantamweight
  • L
    Yana Santos
    UFC 320: Ankalaev vs Pereira 2Sat, Oct 4, 2025
    Unanimous Decision · R3 · 5:00 · Women's Bantamweight
  • L
    Ketlen Vieira
    UFC Fight Night: Gamrot vs KleinSat, May 31, 2025
    Unanimous Decision · R3 · 5:00 · Women's Featherweight
  • W
    Mayra Bueno Silva
    UFC 303: Pereira vs Procházka 2Sat, Jun 29, 2024
    TKO · R2 · 1:58 · Women's Bantamweight
  • W
    Pannie Kianzad
    UFC Fight Night: Tuivasa vs TyburaSat, Mar 16, 2024
    Submission · R1 · 3:54 · Women's Bantamweight

Career Averages

Based on 15 fights · 14 fights
41.4
Avg sig. strikes
35.0
1.33
Avg takedowns
1.36
4:50
Avg control time
3:44
113
Career high strikes
86
4
Career high TDs
6

Strike Distribution

Ketlen Vieira
Strike target
Macy Chiasson
76%
Head
55%
14%
Body
35%
10%
Leg
10%
Ketlen Vieira
Strike position
Macy Chiasson
78%
Distance
48%
16%
Clinch
31%
6%
Ground
21%