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UFC 4: Revenge of the Warriors
Royce Gracie
Royce Gracie
5-0 · BRA
VS
Keith Hackney
Keith Hackney
1-0 · USA
December 16, 1994 · Tulsa, Oklahoma, USA
Open Weight
180.0lb
Weigh-in
200.0lb
Royce Gracie def. Keith Hackney by SUB (Armbar), R1 5:32
Performance
Round by round
SSTDKDCtrl
R1
Gracie11/230/20
Hackney4/130/00
Total
Gracie11/230/20
Hackney4/130/00

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
GracieWin probabilityHackney
72.2%27.8%
KO / TKO
19%
Submission
45%
Decision
36%
Expected fight time: 8.2 min
What drives the pick

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

Predicted outcomes
Gracie72%
Wins by
Model
Equity
Mkt
KO / TKO12%17%
Submission36%50%
Decision24%33%
Predicted output
Sig. strikes40 (2251)act 11
Takedowns0.8 (0.12.2)act 0
Hackney28%
Wins by
Model
Equity
Mkt
KO / TKO7%23%
Submission9%32%
Decision12%45%
Predicted output
Sig. strikes35 (2046)act 4
Takedowns0.2 (0.01.2)act 0
Combined totals~75 sig strikes~1.0 takedownsmkt —
How it ends
mkt —
R149%
R26%
R39%
Distance36%
Fighter props
Most sig. strikestie 1.5%
Gracie
54.3%-123
Hackney
+12344.3%
Most takedownstie 32.9%
Gracie
55.4%-472
Hackney
+47211.7%
Significant strikes — over/under
Gracie
Expected: 39.6
39.5
Over 39.5
42.6%
+135
Under 39.5
57.4%
-135
05099
Hackney
Expected: 35.5
35.5
Over 35.5
42.4%
+136
Under 35.5
57.6%
-136
04589
Takedowns — over/under
Gracie
Expected: 0.8
1
Over 1
36.3%
-544
Exactly 1
57.0%
push
Under 1
6.7%
+544
035
Hackney
Expected: 0.2
0
Over 0
60.9%
Exactly 0
39.1%
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 8.2 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

No market on record for this bout.

Trait web
65.1Striking97.9
Hackney +32.8
60.9Grappling25.0
Gracie +35.9
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
GracieHackney
Tale of the tape
Ratings (Elo)
1590
Pound-for-pound
1531
1590
Divisional
1531
1492
Striking offense
1502
1512
Striking defense
1519
1544
Grappling offense
1513
1502
Grappling defense
1505
Physical
28 yrs
Age
36 yrs
6'1"
Height
5'11"
Reach
Southpaw
Stance
Sideways
Striking (UFC career)
0.58
Strikes landed / min
17.14
57%
Strike accuracy
68%
0.73
Strikes absorbed / min
0.50
44%
Strike defense
80%
Grappling (UFC career)
3.28
Takedowns / 15 min
0.00
43%
Takedown accuracy
0%
Takedown defense
100%
5.5
Sub attempts / 15 min
0.0
Form & résumé
100%
UFC win rate
100%
+7
Win/loss streak
+2
100%
Last-5 win rate
100%
100%
Finish rate
100%
Recent opp. quality
0
Days since last fight
0
Recent form (last 5 UFC)
Royce Gracie
  • WKimo LeopoldoSUB R1
    3mo before
  • WRemco PardoelSUB R1
    9mo before
  • WMinoki IchiharaSUB R1
    9mo before
  • WPatrick SmithKO/TKO R1
    9mo before
  • WJason DeLuciaSUB R1
    9mo before
Keith Hackney
  • WEmmanuel YarboroughKO/TKO R1
    3mo before
Gracie — win / loss by method
Record: 5-0-0

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
1 win, 0 losses
W
20% of wins
L
Submission
4 wins, 0 losses
W
80% of wins
L
Decision
0 wins, 0 losses
W
0% of wins
L
UFC
5win0loss0draw0NC
WinsLosses
1 (20%)KO/TKO() 0
4 (80%)Submission() 0
0 (0%)Decision() 0
Non-UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Hackney — win / loss by method
Record: 1-0-0

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
1 win, 0 losses
W
100% of wins
L
Submission
0 wins, 0 losses
W
0% of wins
L
Decision
0 wins, 0 losses
W
0% of wins
L
UFC
1win0loss0draw0NC
WinsLosses
1 (100%)KO/TKO() 0
0 (0%)Submission() 0
0 (0%)Decision() 0
Non-UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0

Profiles

Experience
Gracie
Hackney
5
UFC fights
1
13.7 min · 2.7 avg
Octagon time
2.0 min · 2.0 avg
32y 5m
Career length
31y 11m
UFC schedule strength

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

Gracie
Hackney
0W–0L
Overall
0W–0L
0W–0L
Wins
0W–0L
0W–0L
Losses
0W–0L
Distance striking
Gracie
Hackney
0.23
Landed / min
3.93
50.0%
Accuracy
75.0%
100.0%
Defense
100.0%
0.00
Knockdowns / 15 min
7.56
63.1%
Time at distance
76.9%
Grappling & control
Gracie
Hackney
3.28
Takedowns / 15 min
0.00
42.9%
Takedown accuracy
0.0%
Takedown defense
100.0%
5.47
Sub attempts / 15 min
0.00
Control share
Strike target map
Gracie
  • Head50%(4)div 74%
  • Body0%(0)div 11%
  • Legs50%(4)div 15%
Hackney
  • Head85%(29)div 74%
  • Body0%(0)div 11%
  • Legs15%(5)div 15%

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

Royce Gracie
CloseSSTDKDCtrl

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

Keith Hackney
CloseSSTDKDCtrl

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