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UFC 48: Payback
VS
Jay Hieron
Jay Hieron
4-0 · USA
June 19, 2004 · Las Vegas, Nevada, USA
Welterweight · 3 rounds
169.0lb
Weigh-in
167.0lb
Georges St-Pierre def. Jay Hieron by KO/TKO (Punches), R1 1:42
Performance
Round by round
SSTDKDCtrl
R1 · 1:42
St-Pierre24/330/120:21
Hieron5/90/300:06
Total
St-Pierre24/330/120:21
Hieron5/90/300:06

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
St-PierreWin probabilityHieron
96.3%3.7%
KO / TKO
41%
Submission
12%
Decision
47%
Expected fight time: 10.8 min
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward St-Pierre, blue toward Hieron. Tap a bar for why.

Predicted outcomes
St-Pierre96%
Wins by
Model
Equity
Mkt
KO / TKO39%41%
Submission12%12%
Decision45%47%
Predicted output
Sig. strikes54 (3070)act 24
Takedowns1.9 (0.04.2)act 0
Hieron4%
Wins by
Model
Equity
Mkt
KO / TKO2%41%
Submission0%11%
Decision2%48%
Predicted output
Sig. strikes18 (923)act 5
Takedowns0.2 (0.01.0)act 0
Combined totals~71 sig strikes~2.1 takedownsmkt —
How it ends
mkt —
R117%
R223%
R313%
Distance47%
Fighter props
Most sig. strikestie 0.9%
St-Pierre
89.1%-889
Hieron
+88910.0%
Most takedownstie 15.4%
St-Pierre
77.7%-1125
Hieron
+11256.9%
Significant strikes — over/under
St-Pierre
Expected: 53.8
54
Over 54
41.6%
+137
Exactly 54
1.2%
push
Under 54
57.1%
-137
068135
Hieron
Expected: 17.5
17.5
Over 17.5
42.6%
+135
Under 17.5
57.4%
-135
02244
Takedowns — over/under
St-Pierre
Expected: 1.9
2
Over 2
37.7%
+102
Exactly 2
23.7%
push
Under 2
38.6%
-102
036
Hieron
Expected: 0.2
0
Over 0
29.1%
Exactly 0
70.9%
push
Under 0
0.0%
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 10.8 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
St-Pierre96.3%70.4%+25.9-275
Hieron3.7%29.6%−25.9+225

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
St-PierreHieron
Tale of the tape
Ratings (Elo)
1534
Pound-for-pound
1512
1534
Divisional
1512
1497
Striking offense
1482
1540
Striking defense
1500
1501
Grappling offense
1561
1502
Grappling defense
1558
Physical
23 yrs
Age
27 yrs
5'11"
Height
6'0"
76"
Reach
75"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.07
Strikes landed / min
58%
Strike accuracy
0.07
Strikes absorbed / min
86%
Strike defense
Grappling (UFC career)
6.00
Takedowns / 15 min
75%
Takedown accuracy
100%
Takedown defense
0.0
Sub attempts / 15 min
Form & résumé
100%
UFC win rate
+1
Win/loss streak
100%
Last-5 win rate
0%
Finish rate
Recent opp. quality
140
Days since last fight
Recent form (last 5 UFC)
Georges St-Pierre
  • WKaro ParisyanU-DEC R3
    Close +2005mo before
Jay Hieron
No prior UFC fights.
St-Pierre — win / loss by method
Record: 6-0-0

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
50% of wins
L
Submission
2 wins, 0 losses
W
33% of wins
L
Decision
1 win, 0 losses
W
17% of wins
L
UFC
1win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
0 (0%)Submission() 0
1 (100%)Decision() 0
Non-UFC
5win0loss0draw0NC
WinsLosses
3 (60%)KO/TKO() 0
2 (40%)Submission() 0
0 (0%)Decision() 0
Hieron — win / loss by method
Record: 4-0-0

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
2 wins, 0 losses
W
50% of wins
L
Submission
1 win, 0 losses
W
25% of wins
L
Decision
1 win, 0 losses
W
25% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
4win0loss0draw0NC
WinsLosses
2 (50%)KO/TKO() 0
1 (25%)Submission() 0
1 (25%)Decision() 0

Profiles

Experience
St-Pierre
Hieron
1
UFC fights
0
15.0 min · 15.0 avg
Octagon time
24y 6m
Career length
UFC schedule strength

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

St-Pierre
Hieron
10W–2L · 83.3%
Overall
10W–2L · 83.3%
Wins
0W–0L
Losses
Non-UFC schedule strength
St-Pierre
Hieron
35W–17L · 67.3%
Overall
0W–1L · 0.0%
35W–17L · 67.3%
Wins
0W–1L · 0.0%
0W–0L
Losses
0W–0L
Distance striking
St-Pierre
Hieron
2.73
Landed / min
46.7%
Accuracy
100.0%
Defense
0.00
Knockdowns / 15 min
17.1%
Time at distance
Grappling & control
St-Pierre
Hieron
6.00
Takedowns / 15 min
75.0%
Takedown accuracy
100.0%
Takedown defense
0.00
Sub attempts / 15 min
97.5%
Control share
Strike target map
St-Pierre
  • Head63%(29)div 67%
  • Body30%(14)div 21%
  • Legs7%(3)div 12%
Hieron
  • Head0%(0)div 67%
  • Body0%(0)div 21%
  • Legs0%(0)div 12%
  • No strike data on record.

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

Georges St-Pierre
CloseSSTDKDCtrl

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

Jay Hieron

No UFC fights on record.

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