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UFC Fight Night: Dern vs. Hill
VS
May 20, 2023 · Las Vegas, Nevada, USA
Strawweight · 3 rounds
115.5lb
Weigh-in
117.5lbMissed +1.5
Karolina Kowalkiewicz def. Vanessa Demopoulos by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Kowalkiewicz42/840/000:23
Demopoulos28/710/100:00
R2
Kowalkiewicz55/820/000:00
Demopoulos22/860/200:00
R3
Kowalkiewicz42/710/001:29
Demopoulos18/640/100:00
Total
Kowalkiewicz139/2370/001:52
Demopoulos68/2210/400:00

Scorecards

Kowalkiewicz vs Demopoulos

RdDerek ClearyJacob MontalvoMichael BellCommunity
R110-910-910-99.9-9
R210-910-910-99.9-9
R310-910-910-99.9-9.1
Total30-2730-2730-2729.7-27.1

Media (14 cards) · avg 3027 · 14 Kowalkiewicz · 0 Demopoulos

Official cards + public consensus via MMA Decisions. Per round: Kowalkiewicz-Demopoulos.

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
KowalkiewiczWin probabilityDemopoulos
56.9%43.1%
KO / TKO
27%
Submission
10%
Decision
63%
Expected fight time: 11.3 min
Retrospective pick: the walk-forward model's call at the time of the fight — persisted out-of-sample, with no hindsight about the result.
What drives the pick

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

Predicted outcomes
Kowalkiewicz57%
Wins by
Model
Equity
Mkt
KO / TKO13%23%9%
Submission5%8%4%
Decision39%69%41%
Predicted output
Sig. strikes60 (2581)act 139
Takedowns0.3 (0.01.5)act 0
Demopoulos43%
Wins by
Model
Equity
Mkt
KO / TKO14%31%7%
Submission5%13%15%
Decision24%56%23%
Predicted output
Sig. strikes57 (2478)act 68
Takedowns1.0 (0.03.5)act 0
Combined totals~117 sig strikes~1.4 takedownsmkt —
How it ends
mkt —
R123%
R210%
R34%
Distance63%
Fighter props
Most sig. strikestie 0.8%
Kowalkiewicz
50.6%-104
Demopoulos
+10448.5%
Most takedownstie 34.3%
Kowalkiewicz
15.3%+330
Demopoulos
-33050.4%
Significant strikes — over/under
Kowalkiewicz
Expected: 59.6
59.5
Over 59.5
39.8%
+151
Under 59.5
60.2%
-151
075149
Demopoulos
Expected: 57.2
57
Over 57
39.5%
+151
Exactly 57
0.9%
push
Under 57
59.6%
-151
072144
Takedowns — over/under
Kowalkiewicz
Expected: 0.3
0.5
Over 0.5
26.8%
+273
Under 0.5
73.2%
-273
035
Demopoulos
Expected: 1.0
1
Over 1
37.5%
+109
Exactly 1
21.7%
push
Under 1
40.8%
-109
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 11.3 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
Kowalkiewicz56.9%54.9%+2.0-135
Demopoulos43.1%45.1%−2.0+111
By method
Kowalkiewicz by KO/TKO15.2%9.0%+6.2+823
Kowalkiewicz by submission5.6%4.5%+1.1+1765
Kowalkiewicz by decision36.0%40.6%−4.6+105
Demopoulos by KO/TKO11.6%7.4%+4.2+1016
Demopoulos by submission4.3%15.1%−10.8+451
Demopoulos by decision27.3%23.5%+3.8+254
Total rounds (over)
Over 1.5 rds76.7%79.0%−2.3-536
Over 2.5 rds67.3%70.5%−3.2-308
Goes the distance
Fight goes to decision63.3%67.4%−4.1-262

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
61.7Striking56.4
Kowalkiewicz +5.2
39.6Grappling39.7
Demopoulos +0.0
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
KowalkiewiczDemopoulos
Tale of the tape
Ratings (Elo)
1531
Pound-for-pound
1542
1531
Divisional
1554
1505
Striking offense
1494
1490
Striking defense
1491
1479
Grappling offense
1505
1521
Grappling defense
1509
Physical
37 yrs
Age
34 yrs
5'3"
Height
5'2"
64"
Reach
59"
Orthodox
Stance
Orthodox
Striking (UFC career)
5.34
Strikes landed / min
4.11
41%
Strike accuracy
50%
5.55
Strikes absorbed / min
5.23
58%
Strike defense
44%
Grappling (UFC career)
0.34
Takedowns / 15 min
0.95
31%
Takedown accuracy
19%
75%
Takedown defense
67%
0.3
Sub attempts / 15 min
0.6
Form & résumé
50%
UFC win rate
75%
+2
Win/loss streak
+3
40%
Last-5 win rate
75%
14%
Finish rate
33%
Recent opp. quality
189
Days since last fight
182
Recent form (last 5 UFC)
Karolina Kowalkiewicz
  • WSilvana Gomez JuarezU-DEC R3
    Close -1066mo before
  • WFelice HerrigSUB R2
    Close -10511mo before
  • LJessica PenneSUB R1
    Close -1421y 9mo before
  • LYan XiaonanU-DEC R3
    Close +2253y 3mo before
  • LAlexa GrassoU-DEC R3
    Close +1053y 11mo before
Vanessa Demopoulos
  • WMaria OliveiraU-DEC R3
    Close -1126mo before
  • WJinh Yu FreyS-DEC R3
    Close +18911mo before
  • WSilvana Gomez JuarezSUB R1
    Close -1511y 4mo before
  • LJJ AldrichU-DEC R3
    Close +3251y 9mo before
Kowalkiewicz — win / loss by method
Record: 14-7-0

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
1 win, 1 loss
W
7% of wins
L
14% of losses
Submission
3 wins, 2 losses
W
21% of wins
L
29% of losses
Decision
10 wins, 4 losses
W
71% of wins
L
57% of losses
UFC
7win7loss0draw0NC
WinsLosses
0 (0%)KO/TKO(14%) 1
1 (14%)Submission(29%) 2
6 (86%)Decision(57%) 4
Non-UFC
7win0loss0draw0NC
WinsLosses
1 (14%)KO/TKO() 0
2 (29%)Submission() 0
4 (57%)Decision() 0
Demopoulos — win / loss by method
Record: 9-4-0

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
1 win, 0 losses
W
11% of wins
L
0% of losses
Submission
4 wins, 0 losses
W
44% of wins
L
0% of losses
Decision
4 wins, 4 losses
W
44% of wins
L
100% of losses
UFC
3win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
1 (33%)Submission(0%) 0
2 (67%)Decision(100%) 1
Non-UFC
6win3loss0draw0NC
WinsLosses
1 (17%)KO/TKO(0%) 0
3 (50%)Submission(0%) 0
2 (33%)Decision(100%) 3

Profiles

Experience
Kowalkiewicz
Demopoulos
14
UFC fights
4
178.6 min · 12.8 avg
Octagon time
47.4 min · 11.9 avg
14y 2m
Career length
8y 7m
UFC schedule strength

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

Kowalkiewicz
Demopoulos
158W–51L · 75.6%
Overall
43W–18L · 70.5%
62W–29L · 68.1%
Wins
34W–14L · 70.8%
96W–22L · 81.4%
Losses
9W–4L · 69.2%
Non-UFC schedule strength
Kowalkiewicz
Demopoulos
36W–10L · 78.3%
Overall
23W–6L · 79.3%
36W–10L · 78.3%
Wins
12W–3L · 80.0%
0W–0L
Losses
11W–3L · 78.6%
Distance striking
Kowalkiewicz
Demopoulos
6.20
Landed / min
4.53
34.7%
Accuracy
38.9%
61.9%
Defense
45.8%
0.00
Knockdowns / 15 min
0.32
62.6%
Time at distance
53.5%
Grappling & control
Kowalkiewicz
Demopoulos
0.34
Takedowns / 15 min
0.95
30.8%
Takedown accuracy
18.8%
75.0%
Takedown defense
66.7%
0.25
Sub attempts / 15 min
0.63
38.7%
Control share
71.2%
Strike target map
Kowalkiewicz
  • Head64%(607)div 61%
  • Body24%(228)div 22%
  • Legs12%(119)div 16%
Demopoulos
  • Head61%(119)div 61%
  • Body28%(54)div 22%
  • Legs11%(22)div 16%

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

Karolina Kowalkiewicz
CloseSSTDKDCtrl

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

Vanessa Demopoulos
CloseSSTDKDCtrl

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