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UFC 127: Penn vs Fitch
Dennis Siver
Dennis Siver
17-7 · DEU
VS
February 26, 2011 · Sydney, New South Wales, Australia
Lightweight · 3 rounds
156.6lbMissed +0.6
Weigh-in
155.8lb
Dennis Siver def. George Sotiropoulos by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Siver24/700/020:18
Sotiropoulos9/460/500:08
R2
Siver16/730/000:00
Sotiropoulos14/760/300:00
R3
Siver34/830/000:00
Sotiropoulos15/820/500:00
Total
Siver74/2260/020:18
Sotiropoulos38/2040/1300:08

Scorecards

Siver vs Sotiropoulos

RdKon PapaioannouPaul SutherlandSal D'AmatoCommunity
R1-10-9-10-8.5
R2-10-9-9.4-9.6
R3-10-9-9.9-9.2
Total30-2830-2729-2829.3-27.3

Media (6 cards) · avg 29.227.5 · 6 Siver · 0 Sotiropoulos

Official cards + public consensus via MMA Decisions. Per round: Siver-Sotiropoulos.

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
SiverWin probabilitySotiropoulos
40.5%59.5%
KO / TKO
23%
Submission
9%
Decision
69%
Expected fight time: 12.2 min
What drives the pick

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

Predicted outcomes
Siver40%
Wins by
Model
Equity
Mkt
KO / TKO14%34%
Submission3%7%
Decision23%59%
Predicted output
Sig. strikes51 (2966)act 74
Takedowns0.2 (0.00.8)act 0
Sotiropoulos60%
Wins by
Model
Equity
Mkt
KO / TKO9%15%
Submission6%10%
Decision45%75%
Predicted output
Sig. strikes41 (2353)act 38
Takedowns0.9 (0.02.9)act 0
Combined totals~92 sig strikes~1.1 takedownsmkt —
How it ends
mkt —
R117%
R26%
R38%
Distance69%
Fighter props
Most sig. strikestie 1.2%
Siver
59.8%-153
Sotiropoulos
+15339.1%
Most takedownstie 41.4%
Siver
10.4%+465
Sotiropoulos
-46548.2%
Significant strikes — over/under
Siver
Expected: 50.9
51
Over 51
41.7%
+136
Exactly 51
1.3%
push
Under 51
56.9%
-136
064128
Sotiropoulos
Expected: 40.6
40.5
Over 40.5
42.7%
+134
Under 40.5
57.3%
-134
051102
Takedowns — over/under
Siver
Expected: 0.2
0
Over 0
17.3%
Exactly 0
82.7%
push
Under 0
0.0%
035
Sotiropoulos
Expected: 0.9
1
Over 1
33.1%
+141
Exactly 1
20.3%
push
Under 1
46.6%
-141
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 12.2 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
Siver40.5%23.1%+17.4+325
Sotiropoulos59.5%76.9%−17.4-360

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
63.2Striking66.2
Sotiropoulos +3.0
32.7Grappling79.7
Sotiropoulos +47.1
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
SiverSotiropoulos
Tale of the tape
Ratings (Elo)
1554
Pound-for-pound
1619
1564
Divisional
1594
1523
Striking offense
1506
1519
Striking defense
1519
1499
Grappling offense
1534
1503
Grappling defense
1519
Physical
32 yrs
Age
33 yrs
5'6"
Height
5'10"
70"
Reach
71"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.46
Strikes landed / min
2.48
28%
Strike accuracy
31%
2.78
Strikes absorbed / min
1.48
65%
Strike defense
73%
Grappling (UFC career)
0.73
Takedowns / 15 min
3.55
29%
Takedown accuracy
54%
33%
Takedown defense
45%
0.5
Sub attempts / 15 min
2.8
Form & résumé
60%
UFC win rate
100%
+2
Win/loss streak
+7
80%
Last-5 win rate
100%
83%
Finish rate
71%
Recent opp. quality
105
Days since last fight
98
Recent form (last 5 UFC)
Dennis Siver
  • WAndre WinnerSUB R1
    Close +1053mo before
  • WSpencer FisherU-DEC R3
    Close +1658mo before
  • LRoss PearsonU-DEC R3
    Close +18011mo before
  • WPaul KellyKO/TKO R2
    Close +2751y 3mo before
  • WDale HarttSUB R1
    Close -1781y 8mo before
George Sotiropoulos
  • WJoe LauzonSUB R2
    Close -2253mo before
  • WKurt PellegrinoU-DEC R3
    Close -1588mo before
  • WJoe StevensonU-DEC R3
    Close +2111y before
  • WJason DentSUB R2
    Close -6731y 3mo before
  • WGeorge RoopSUB R2
    Close -4781y 7mo before
Siver — win / loss by method
Record: 17-7-0

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
7 wins, 1 loss
W
41% of wins
L
14% of losses
Submission
7 wins, 4 losses
W
41% of wins
L
57% of losses
Decision
3 wins, 2 losses
W
18% of wins
L
29% of losses
UFC
6win4loss0draw0NC
WinsLosses
3 (50%)KO/TKO(25%) 1
2 (33%)Submission(25%) 1
1 (17%)Decision(50%) 2
Non-UFC
11win3loss0draw0NC
WinsLosses
4 (36%)KO/TKO(0%) 0
5 (45%)Submission(100%) 3
2 (18%)Decision(0%) 0
Sotiropoulos — win / loss by method
Record: 14-2-0

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
7% of wins
L
0% of losses
Submission
8 wins, 0 losses
W
57% of wins
L
0% of losses
Decision
5 wins, 1 loss
W
36% of wins
L
50% of losses
DQ / other
0 wins, 1 loss
W
0% of wins
L
50% of losses
UFC
7win0loss0draw0NC
WinsLosses
1 (14%)KO/TKO() 0
4 (57%)Submission() 0
2 (29%)Decision() 0
Non-UFC
7win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
4 (57%)Submission(0%) 0
3 (43%)Decision(50%) 1
0 (0%)DQ / other(50%) 1

Profiles

Experience
Siver
Sotiropoulos
10
UFC fights
7
82.7 min · 8.3 avg
Octagon time
63.3 min · 9.0 avg
22y 5m
Career length
21y 8m
UFC schedule strength

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

Siver
Sotiropoulos
123W–40L · 75.5%
Overall
103W–34L · 75.2%
76W–22L · 77.6%
Wins
103W–34L · 75.2%
47W–18L · 72.3%
Losses
0W–0L
Non-UFC schedule strength
Siver
Sotiropoulos
91W–50L · 64.5%
Overall
49W–26L · 65.3%
67W–45L · 59.8%
Wins
32W–22L · 59.3%
24W–5L · 82.8%
Losses
17W–4L · 81.0%
Distance striking
Siver
Sotiropoulos
4.47
Landed / min
4.38
25.9%
Accuracy
23.4%
67.7%
Defense
77.6%
0.91
Knockdowns / 15 min
0.24
65.6%
Time at distance
34.6%
Grappling & control
Siver
Sotiropoulos
0.73
Takedowns / 15 min
3.55
28.6%
Takedown accuracy
53.6%
33.3%
Takedown defense
45.5%
0.54
Sub attempts / 15 min
2.84
38.0%
Control share
74.8%
Strike target map
Siver
  • Head59%(170)div 65%
  • Body12%(35)div 18%
  • Legs28%(81)div 17%
Sotiropoulos
  • Head88%(138)div 65%
  • Body11%(17)div 18%
  • Legs1%(2)div 17%

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

Dennis Siver
CloseSSTDKDCtrl

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

George Sotiropoulos
CloseSSTDKDCtrl

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