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UFC Fight Night: Rodriguez vs. Stephens
Sergio Pettis
Sergio Pettis
17-5 · USA
VS
Tyson Nam
Tyson Nam
18-9-1 · USA
September 21, 2019 · Mexico City, Distrito Federal, Mexico
Flyweight · 3 rounds
124.0lb
Weigh-in
126.0lb
Sergio Pettis def. Tyson Nam by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Pettis17/570/000:00
Nam7/420/000:06
R2
Pettis32/910/000:00
Nam16/670/000:12
R3
Pettis47/1050/000:02
Nam17/610/000:28
Total
Pettis96/2530/000:02
Nam40/1700/000:46

Scorecards

Pettis vs Nam

RdDouglas CrosbyRick WinterSal D'AmatoCommunity
R110-910-910-99.9-9.1
R210-910-910-99.9-9.1
R310-910-910-910-9
Total30-2730-2730-2729.8-27.2

Media (11 cards) · avg 3027 · 11 Pettis · 0 Nam

Official cards + public consensus via MMA Decisions. Per round: Pettis-Nam.

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
PettisWin probabilityNam
75.4%24.6%
KO / TKO
46%
Submission
5%
Decision
49%
Expected fight time: 11.2 min
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward Pettis, blue toward Nam. Tap a bar for why.

Predicted outcomes
Pettis75%
Wins by
Model
Equity
Mkt
KO / TKO30%40%
Submission4%6%
Decision41%54%
Predicted output
Sig. strikes67 (3887)act 96
Takedowns0.3 (0.01.5)act 0
Nam25%
Wins by
Model
Equity
Mkt
KO / TKO17%67%
Submission1%3%
Decision7%30%
Predicted output
Sig. strikes40 (2252)act 40
Takedowns0.3 (0.01.2)act 0
Combined totals~106 sig strikes~0.6 takedownsmkt —
How it ends
mkt —
R114%
R223%
R315%
Distance48%
Fighter props
Most sig. strikestie 0.9%
Pettis
72.4%-271
Nam
+27126.7%
Most takedownstie 57.4%
Pettis
23.2%-120
Nam
+12019.4%
Significant strikes — over/under
Pettis
Expected: 66.8
67
Over 67
41.8%
+137
Exactly 67
1.0%
push
Under 67
57.2%
-137
084167
Nam
Expected: 39.6
39.5
Over 39.5
42.7%
+134
Under 39.5
57.3%
-134
050100
Takedowns — over/under
Pettis
Expected: 0.3
0.5
Over 0.5
27.5%
+264
Under 0.5
72.5%
-264
035
Nam
Expected: 0.3
0.5
Over 0.5
24.1%
+316
Under 0.5
75.9%
-316
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 11.2 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
Pettis75.4%72.4%+3.0-300
Nam24.6%27.6%−3.0+250

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
PettisNam
Tale of the tape
Ratings (Elo)
1570
Pound-for-pound
1505
1565
Divisional
1505
1511
Striking offense
1500
1506
Striking defense
1500
1469
Grappling offense
1500
1499
Grappling defense
1500
Physical
26 yrs
Age
35 yrs
5'6"
Height
5'7"
69"
Reach
68"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.68
Strikes landed / min
37%
Strike accuracy
2.93
Strikes absorbed / min
64%
Strike defense
Grappling (UFC career)
0.92
Takedowns / 15 min
40%
Takedown accuracy
68%
Takedown defense
0.4
Sub attempts / 15 min
Form & résumé
62%
UFC win rate
-2
Win/loss streak
40%
Last-5 win rate
0%
Finish rate
Recent opp. quality
280
Days since last fight
Recent form (last 5 UFC)
Sergio Pettis
  • LRob FontU-DEC R3
    Close +1459mo before
  • LJussier FormigaU-DEC R3
    Close -19011mo before
  • WJoseph BenavidezS-DEC R3
    Close +1701y 3mo before
  • LHenry CejudoU-DEC R3
    Close +2601y 10mo before
  • WBrandon MorenoU-DEC R5
    Close +1552y 2mo before
Tyson Nam
No prior UFC fights.
Pettis — win / loss by method
Record: 17-5-0

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, 1 loss
W
18% of wins
L
20% of losses
Submission
3 wins, 1 loss
W
18% of wins
L
20% of losses
Decision
11 wins, 3 losses
W
65% of wins
L
60% of losses
UFC
8win5loss0draw0NC
WinsLosses
0 (0%)KO/TKO(20%) 1
0 (0%)Submission(20%) 1
8 (100%)Decision(60%) 3
Non-UFC
9win0loss0draw0NC
WinsLosses
3 (33%)KO/TKO() 0
3 (33%)Submission() 0
3 (33%)Decision() 0
Nam — win / loss by method
Record: 18-9-1

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
10 wins, 3 losses
W
56% of wins
L
33% of losses
Submission
1 win, 0 losses
W
6% of wins
L
0% of losses
Decision
7 wins, 6 losses
W
39% of wins
L
67% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
18win9loss1draw0NC
WinsLosses
10 (56%)KO/TKO(33%) 3
1 (6%)Submission(0%) 0
7 (39%)Decision(67%) 6

Profiles

Experience
Pettis
Nam
13
UFC fights
0
196.2 min · 15.1 avg
Octagon time
14y 11m
Career length
UFC schedule strength

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

Pettis
Nam
187W–54L · 77.6%
Overall
124W–35L · 78.0%
Wins
63W–19L · 76.8%
Losses
Non-UFC schedule strength
Pettis
Nam
40W–43L · 48.2%
Overall
159W–76L · 67.7%
40W–43L · 48.2%
Wins
89W–57L · 61.0%
0W–0L
Losses
70W–19L · 78.7%
Distance striking
Pettis
Nam
5.39
Landed / min
35.7%
Accuracy
66.9%
Defense
0.08
Knockdowns / 15 min
60.5%
Time at distance
Grappling & control
Pettis
Nam
0.92
Takedowns / 15 min
40.0%
Takedown accuracy
67.6%
Takedown defense
0.38
Sub attempts / 15 min
24.5%
Control share
Strike target map
Pettis
  • Head79%(569)div 62%
  • Body11%(77)div 23%
  • Legs11%(77)div 15%
Nam
  • Head0%(0)div 62%
  • Body0%(0)div 23%
  • Legs0%(0)div 15%
  • No strike data on record.

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

Sergio Pettis
CloseSSTDKDCtrl

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

Tyson Nam

No UFC fights on record.

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