METRICS GUIDE
Every stat on this page, explained
All stats are calculated from official fight data. Style scores are Combatrics proprietary ratings updated after every event.
UFC 320: Ankalaev vs. Pereira 2
Las Vegas, USA
4 Oct 2025
Women's Bantamweight
VS
62%
Chiasson
38%
Santos
Win Probability
Decision
Round 3 · 5:00
★ Official Result
Yana SantoswinsDecisionR3 · 5:00
def. Macy Chiasson · UFC 320: Ankalaev vs. Pereira 2
Fight Report
Pre-fight analysis · prediction vs result
Prediction vs Result
We predicted
Chiasson
→
Actual result
Santos wins
Decision · R3
Pre-fight analysis
Chiasson holds a meaningful edge at 62% per the CFR ratings — but Santos has real paths to victory.
Key angles
The CFR gap of 25 points suggests a clear performance difference on paper.
Chiasson has beaten significantly higher-quality opposition — a QoV edge of 25 points.
Risk flags
Chiasson's chin rating of 58 flags durability concerns based on KO history.
Santos has a chin rating of 30 — a potential KO vulnerability.
This Fight — Statistics
Actual stats from this bout
ChiassonSantos
0
Sig. Strikes
0
0.0
Strikes / min (SLpM)
0.0
—
Strike Accuracy
—
Chiasson
Santos
Physical Matchup
Height · Reach · Age · Stance
5'11"+
Height
5'6"
72"+
Reach
68"
35+
Age
36
Orthodox
Stance
Orthodox
Chiasson
Santos
Composite Fighter Rating
Overall score combining performance, win quality, momentum & durability
61.5
37.0
53.0
Performance Avg
38.3
50
Quality of Victory
25
96
Momentum Score
55
Chiasson
Santos
Striking
Career averages · see This Fight stats above
3.6
/ 10
1.2
/ 10
5.2
Style: Pressure
1.8
4.1
Style: Volume
9.2
2 KO wins
Finish Rate (strikes)
0 KO wins
Per-minute strike stats will populate after live card results are scraped
Strike targetStrike target
11
Head
0
4
Body
2
0
Leg
1
RangeRange
6Distance3
4Clinch0
5Ground0
Chiasson
Santos
Grappling
Career averages · see This Fight stats above
2.9
/ 10
2.4
/ 10
2.0
Wrestling Style (/10)
1.7
2.5
Submission Style (/10)
0.0
2
Submission wins
0
Per-fight takedown stats will populate after live card results are scraped
Chiasson
Santos
Durability / Chin
Resilience against knockouts and stoppages
58
30
KO risk
Verdict
KO risk
1
KO/TKO Losses
3
1
Sub Losses
0
Avg R3.0 stoppage
KO round context
Avg R1.7 stoppage
5 fights ago
Last KO loss
5 fights ago
—
Strikes absorbed / min
—
14/17 fights
Chin rating based on
12/25 fights
Chiasson
Santos
Form & Momentum
Recent fight performance — most recent weighted 30%
96
55
3-fight 📉 slide
Current form
3-fight 🔥 win streak
L · Dec · R3
L · Dec · R3
L · Dec · R3
W · R2
W · Sub · R1
Last 5
W · Dec · R3
W · Dec · R3
W · Dec · R3
L · Dec · R3
L · Dec · R3
Chiasson
Santos
Finish Rate
Percentage of wins by KO/TKO or Submission
50%
0%
2
KO / TKO Wins
0
2
Submission Wins
0
4
Decision Wins
7
Style Fingerprint
Combatrics radar — 6 fighting dimensions scored 0–10
Chiasson
Santos
Fighter 1
Fighter 2
3.6
Striking
KO power & stand-up volume
1.2
2.9
Grappling
Ground control & clinch
2.4
2.0
Wrestling
Takedown threat & defence
1.7
2.5
Submission
Submission attack frequency
0.0
5.2
Pressure
Clinch/ground work rate
1.8
4.1
Volume
Decision-pace fighting
9.2
ChiassonSantos
Strike Zones
Chiasson
Attacking
15 landedAbsorbing
3 absorbedSantos
Attacking
3 landedAbsorbing
15 absorbedTargeting Overlap
🎯Chiasson targets the head (73% of attacks) — Santos absorbs 73% of strikes there
🎯Santos targets the body (67% of attacks) — Chiasson absorbs 67% of strikes there
Round by Round
This fight · per-round breakdown
Chiasson
RND
Santos
0/0R00/0
Chiasson · Last 5
L · Dec · R3
Ailin PerezDecision
UFC Fight Night: Moreno vs. Kavanagh · 2026-02
L · Dec · R3
Yana SantosDecision
UFC 320: Ankalaev vs. Pereira 2 · 2025-10
L · Dec · R3
Ketlen VieiraDecision
UFC Fight Night: Blanchfield vs. Barber · 2025-05
W · R2
Mayra Bueno SilvaUFC 303: Pereira vs. Prochazka 2 · 2024-06
W · Sub · R1
Pannie KianzadSubmission
UFC Fight Night: Tuivasa vs. Tybura · 2024-03
Santos · Last 5
W · Dec · R3
Macy ChiassonDecision
UFC 320: Ankalaev vs. Pereira 2 · 2025-10
W · Dec · R3
Miesha TateDecision
UFC Fight Night: Sandhagen vs. Figueiredo · 2025-05
W · Dec · R3
Chelsea ChandlerDecision
UFC Fight Night: Tybura vs. Spivac 2 · 2024-08
L · Dec · R3
Karol RosaDecision
UFC Fight Night: Strickland vs. Magomedov · 2023-07
L · Dec · R3
Holly HolmDecision
UFC Fight Night: Vera vs. Sandhagen · 2023-03