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UFC Fight Night: Swanson vs. Ortega
Alex Perez
Alex Perez
18-4 · USA
VS
December 9, 2017 · Fresno, California, USA
Bantamweight · 3 rounds
135.0lb
Weigh-in
135.8lb
Alex Perez def. Carls John De Tomas by SUB (Anaconda Choke), R2 1:54
Performance
Round by round
SSTDKDCtrl
R1
Perez15/271/302:11
John De Tomas8/250/200:54
R2 · 1:54
Perez9/131/101:27
John De Tomas0/30/000:00
Total
Perez24/402/403:38
John De Tomas8/280/200:54

Pre-fight

The model's read going in

The walk-forward model's call at the time of the bout — persisted out-of-sample, with no hindsight about the result.

Prediction
PerezWin probabilityJohn De Tomas
72.9%27.1%
KO / TKO
31%
Submission
32%
Decision
37%
Expected fight time: 8.5 min
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward Perez, blue toward John De Tomas. Tap a bar for why.

Predicted outcomes
Perez73%
Wins by
Model
Equity
Mkt
KO / TKO23%31%
Submission22%30%
Decision28%39%
Predicted output
Sig. strikes32 (1842)act 24
Takedowns0.8 (0.02.6)act 2
John De Tomas27%
Wins by
Model
Equity
Mkt
KO / TKO8%29%
Submission10%39%
Decision9%32%
Predicted output
Sig. strikes31 (1740)act 8
Takedowns0.4 (0.01.7)act 0
Combined totals~63 sig strikes~1.2 takedownsmkt —
How it ends
mkt —
R144%
R210%
R39%
Distance37%
Fighter props
Most sig. strikestie 1.7%
Perez
51.2%-109
John De Tomas
+10947.0%
Most takedownstie 36.9%
Perez
42.3%-203
John De Tomas
+20320.9%
Significant strikes — over/under
Perez
Expected: 32.3
32.5
Over 32.5
42.1%
+138
Under 32.5
57.9%
-138
04181
John De Tomas
Expected: 30.8
31
Over 31
41.1%
+138
Exactly 31
2.1%
push
Under 31
56.8%
-138
03978
Takedowns — over/under
Perez
Expected: 0.8
1
Over 1
30.4%
+154
Exactly 1
22.8%
push
Under 1
46.8%
-154
035
John De Tomas
Expected: 0.4
0.5
Over 0.5
33.6%
+197
Under 0.5
66.4%
-197
035

Odds are model-implied (no real prop market is priced for these). The “most” prices are draw-no-bet — a tie (for takedowns, usually 0–0) is a push, so each side is priced off its chance of winning given a result, while the % shown is the raw chance of landing strictly more. Drag a line in half-point steps: a half line (e.g. 2.5) is a clean over/under, while a whole number adds a third outcome — landing exactly on it, a push — so over, exact and under sum to 100%. On a whole number the over/under odds are draw-no-bet (priced off the decisive mass, since the push refunds), so the two sides stay mirror images rather than implying an arbitrage.

Expected fight time 8.5 min. Predicted-output ranges are percentiles of the model’s simulated fights: sig strikes the middle 50% (25th–75th); takedowns the wider 10th–90th, since they’re 0 in most fights so a narrow band would collapse to 0. Win-by-method = win probability × that fighter’s own method split: the model forecasts how the fight ends, and that forecast is divided between the corners by each fighter’s finishing record — UFC wins in full, earlier-career wins at half weight, as of fight night — reconciled so the fighters’ totals still equal their win probabilities and the methods still total the fight-level forecast above. “Equity” is each of those over that fighter’s win % — how they win given that they win — so a column adds to 100%, and it differs by corner. A fighter with no classifiable wins at any level leans on the fight-level split. “How it ends” is the model’s round-of-finish split. “Mkt” is the de-vigged market prop (consensus across books), shown for context, not as a betting signal; rounds & totals slots fill as that data lands. Percentages are apportioned by largest remainder, so each set adds to its total exactly and an individual figure can sit a point off its own rounding.

Model vs market
Final
ModelMarketGapLine
To win
Perez72.9%77.8%−4.9-420
John De Tomas27.1%22.2%+4.9+335

Market % is the de-vigged (no-vig) consensus across the books that price both fighters; the line is the average across books with the min–max range in parentheses. Gap is the model minus the market in points (+ = the model rates that outcome above the market). Thin or one-sided markets are flagged or left blank rather than shown as a fabricated %. Shown for context, not as a bet — the closing line is the sharpest public price and the model trails it on average. For 5-round bouts the model splits its round-3+ finish mass into rounds 3–5 by the historical within-bucket rate, so the over-3.5 / 4.5 lines carry a model estimate.

Trait web
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PerezJohn De Tomas
Tale of the tape
Ratings (Elo)
1533
Pound-for-pound
1508
1533
Divisional
1523
1482
Striking offense
1499
1500
Striking defense
1498
1561
Grappling offense
1499
1558
Grappling defense
1497
Physical
25 yrs
Age
21 yrs
5'6"
Height
5'5"
65"
Reach
71"
Orthodox
Stance
Southpaw
Striking (UFC career)
Strikes landed / min
2.00
Strike accuracy
41%
Strikes absorbed / min
4.13
Strike defense
47%
Grappling (UFC career)
Takedowns / 15 min
2.00
Takedown accuracy
50%
Takedown defense
100%
Sub attempts / 15 min
0.0
Form & résumé
UFC win rate
0%
Win/loss streak
-1
Last-5 win rate
0%
Finish rate
Recent opp. quality
Days since last fight
175
Recent form (last 5 UFC)
Alex Perez
No prior UFC fights.
Carls John De Tomas
  • LNaoki InoueU-DEC R3
    missedClose +2356mo before
Perez — win / loss by method
Record: 18-4-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
3 wins, 0 losses
W
17% of wins
L
0% of losses
Submission
5 wins, 3 losses
W
28% of wins
L
75% of losses
Decision
10 wins, 1 loss
W
56% of wins
L
25% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
18win4loss0draw0NC
WinsLosses
3 (17%)KO/TKO(0%) 0
5 (28%)Submission(75%) 3
10 (56%)Decision(25%) 1
John De Tomas — win / loss by method
Record: 7-1-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
0 wins, 0 losses
W
0% of wins
L
0% of losses
Submission
4 wins, 0 losses
W
57% of wins
L
0% of losses
Decision
3 wins, 1 loss
W
43% of wins
L
100% of losses
UFC
0win1loss0draw0NC
WinsLosses
0 ()KO/TKO(0%) 0
0 ()Submission(0%) 0
0 ()Decision(100%) 1
Non-UFC
7win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
4 (57%)Submission() 0
3 (43%)Decision() 0

Profiles

Experience
Perez
John De Tomas
0
UFC fights
1
Octagon time
15.0 min · 15.0 avg
Career length
13y 10m
UFC schedule strength

Opponents' records on fight night — toggle their full cross-promotional record vs UFC bouts only.

Perez
John De Tomas
Overall
8W–0L · 100.0%
Wins
0W–0L
Losses
8W–0L · 100.0%
Non-UFC schedule strength
Perez
John De Tomas
136W–93L · 59.4%
Overall
19W–17L · 52.8%
105W–75L · 58.3%
Wins
19W–17L · 52.8%
31W–18L · 63.3%
Losses
0W–0L
Distance striking
Perez
John De Tomas
Landed / min
4.71
Accuracy
35.6%
Defense
53.3%
Knockdowns / 15 min
0.00
Time at distance
29.7%
Grappling & control
Perez
John De Tomas
Takedowns / 15 min
2.00
Takedown accuracy
50.0%
Takedown defense
100.0%
Sub attempts / 15 min
0.00
Control share
12.9%
Strike target map
Perez
  • Head0%(0)div 63%
  • Body0%(0)div 21%
  • Legs0%(0)div 16%
  • No strike data on record.
John De Tomas
  • Head63%(19)div 63%
  • Body3%(1)div 21%
  • Legs33%(10)div 16%

Where each fighter lands significant strikes (career). “div” = the weight-class average.

Alex Perez

No UFC fights on record.

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.

Carls John De Tomas
CloseSSTDKDCtrl

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.