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Bout 5 of 13

Curtis Blaydes vs Waldo Cortes Acosta

Sat, Sep 12, 5:00 PM ET · Heavyweight · 3 rounds · Noche UFC: Silva vs. Delgado · Desert Diamond Arena

Winner

Who the model expects to win

Probabilities over the two fighters, from the head that was evaluated on its own preregistered bar.

Curtis BlaydesCurtis Blaydes19-6-0
vs
Waldo Cortes AcostaWaldo Cortes Acosta17-3-0
Model pickWaldo Cortes Acosta · 59.4%KO / TKO · round 3 or later
19-6-0Record17-3-0
20Tracked bouts13
40.7%Win chance59.4%

The model reads it 59% — nothing in either tracked record separates them cleanly, so the number rests on the model's wider inputs rather than a headline stat.

Method

How it ends

Read among fights that end with a winner — a draw or no-contest sits outside this sample, so the three add to 100%.

KO / TKO50.4%
Submission5.1%
Decision44.6%
Round

How far it goes

R3+ carries every fight that reaches the judges as well as every round-3-or-later finish.

23
R1
15
R2
62
R3+
Round 1
22.6%
Round 2
15.4%
Round 3 or later
62.1%
Goes the distance
44.6%

“Goes the distance” is the method head’s decision probability, not a separate model — so it cannot disagree with the bar above it.

The fighters

What the corpus knows about each of them

Tracked bouts only — a fight outside the corpus is not counted, and a thin record says so.

Curtis Blaydes
19-6-0

2-3 in the last 5. 57% of wins come by finish; 35% of fights reach the judges.

+ 8 career knockouts in this corpus
+ 70% win rate across 20 tracked bouts
Losses tend to come by finish rather than decision
Last 5 tracked
LJosh HokitDecision R3
WRizvan KunievDecision R3
LTom AspinallKO / TKO R1
WJailton AlmeidaKO / TKO R2
LSergei PavlovichKO / TKO R1
Waldo Cortes Acosta
17-3-0

3-2 in the last 5. 50% of wins come by finish; 62% of fights reach the judges.

+ 5 career knockouts in this corpus
+ 77% win rate across 13 tracked bouts
+ Durable — most tracked fights reach the judges
Too few tracked losses to name a pattern — absence of data, not absence of weakness
Last 5 tracked
LAlexander VolkovDecision R3
WDerrick LewisKO / TKO R2
WShamil GazievKO / TKO R1
WAnte DelijaKO / TKO R1
LSergei PavlovichDecision R3
Method

Where these numbers come from

Three separate heads — winner, method and round — each fitted on a corpus of tracked UFC fights and each published only on its own PASS verdict against a bar frozen before it was fitted. This is the one model on the site that beat its baseline on every head it was tested on.

Winner 60.6% accurate over 3,557 held-out fights · baseline 50% · log loss 0.6615 against 0.6931
Method 52.7% accurate over 3,557 held-out fights · baseline 46.7% · log loss 0.9692 against 1.0255
Round 60.6% accurate over 3,557 held-out fights · baseline 55.3% · log loss 0.9148 against 0.9549
model ufc-fight-model@e657fc40b64d
corpus 8,642 fights · 1994-03-11 to 2026-08-08 · scrape_ufc_stats (GPL-3.0)
generated 2026-09-09T17:05:43Z

Educational and paper-only — not betting advice.

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