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UFC 42: Sudden Impact
David Loiseau
David Loiseau
8-2 · CAN
VS
Mark Weir
Mark Weir
9-2 · GBR
April 25, 2003 · Miami, Florida, USA
Middleweight · 3 rounds
184.0lb
Weigh-in
183.0lb
David Loiseau def. Mark Weir by KO/TKO (Punches), R1 3:55
Performance
Round by round
SSTDKDCtrl
R1 · 3:55
Loiseau16/201/203:30
Weir2/20/000:00
Total
Loiseau16/201/203:30
Weir2/20/000:00

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
LoiseauWin probabilityWeir
78.2%21.8%
KO / TKO
17%
Submission
41%
Decision
43%
Expected fight time: 8.8 min
What drives the pick

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

Predicted outcomes
Loiseau78%
Wins by
Model
Equity
Mkt
KO / TKO12%16%
Submission31%39%
Decision35%45%
Predicted output
Sig. strikes34 (1945)act 16
Takedowns1.0 (0.02.7)act 1
Weir22%
Wins by
Model
Equity
Mkt
KO / TKO4%20%
Submission10%46%
Decision8%34%
Predicted output
Sig. strikes29 (1638)act 2
Takedowns0.1 (0.00.6)act 0
Combined totals~64 sig strikes~1.1 takedownsmkt —
How it ends
mkt —
R144%
R27%
R36%
Distance43%
Fighter props
Most sig. strikestie 1.7%
Loiseau
56.3%-134
Weir
+13442.0%
Most takedownstie 17.5%
Loiseau
77.5%-1546
Weir
+15465.0%
Significant strikes — over/under
Loiseau
Expected: 34.3
34.5
Over 34.5
42.1%
+138
Under 34.5
57.9%
-138
04386
Weir
Expected: 29.3
29.5
Over 29.5
42.1%
+138
Under 29.5
57.9%
-138
03774
Takedowns — over/under
Loiseau
Expected: 1.0
1
Over 1
42.5%
-337
Exactly 1
44.9%
push
Under 1
12.6%
+337
035
Weir
Expected: 0.1
0
Over 0
18.9%
Exactly 0
81.1%
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 8.8 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
Loiseau78.2%68.9%+9.3-280
Weir21.8%31.1%−9.3+200

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
LoiseauWeir
Tale of the tape
Ratings (Elo)
1515
Pound-for-pound
1522
1515
Divisional
1521
Striking offense
Striking defense
1500
Grappling offense
1486
1500
Grappling defense
1493
Physical
23 yrs
Age
35 yrs
6'0"
Height
6'2"
76"
Reach
Orthodox
Stance
Southpaw
Striking (UFC career)
Strikes landed / min
2.30
Strike accuracy
62%
Strikes absorbed / min
1.00
Strike defense
55%
Grappling (UFC career)
Takedowns / 15 min
0.00
Takedown accuracy
Takedown defense
0%
Sub attempts / 15 min
4.5
Form & résumé
UFC win rate
50%
Win/loss streak
-1
Last-5 win rate
50%
Finish rate
100%
Recent opp. quality
Days since last fight
154
Recent form (last 5 UFC)
David Loiseau
No prior UFC fights.
Mark Weir
  • LPhillip MillerSUB R2
    Close -1205mo before
  • WEugene JacksonKO/TKO R1
    9mo before
Loiseau — win / loss by method
Record: 8-2-0

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
4 wins, 1 loss
W
50% of wins
L
50% of losses
Submission
2 wins, 1 loss
W
25% of wins
L
50% of losses
Decision
2 wins, 0 losses
W
25% of wins
L
0% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
8win2loss0draw0NC
WinsLosses
4 (50%)KO/TKO(50%) 1
2 (25%)Submission(50%) 1
2 (25%)Decision(0%) 0
Weir — win / loss by method
Record: 9-2-0

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
5 wins, 1 loss
W
56% of wins
L
50% of losses
Submission
4 wins, 1 loss
W
44% of wins
L
50% of losses
Decision
0 wins, 0 losses
W
0% of wins
L
0% of losses
UFC
1win1loss0draw0NC
WinsLosses
1 (100%)KO/TKO(0%) 0
0 (0%)Submission(100%) 1
0 (0%)Decision(0%) 0
Non-UFC
8win1loss0draw0NC
WinsLosses
4 (50%)KO/TKO(100%) 1
4 (50%)Submission(0%) 0
0 (0%)Decision(0%) 0

Profiles

Experience
Loiseau
Weir
0
UFC fights
2
Octagon time
10.0 min · 5.0 avg
Career length
26y 2m
UFC schedule strength

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

Loiseau
Weir
Overall
26W–6L · 81.3%
Wins
12W–6L · 66.7%
Losses
14W–0L · 100.0%
Non-UFC schedule strength
Loiseau
Weir
49W–20L · 71.0%
Overall
36W–24L · 60.0%
48W–20L · 70.6%
Wins
36W–24L · 60.0%
1W–0L · 100.0%
Losses
0W–0L
Distance striking
Loiseau
Weir
Landed / min
5.22
Accuracy
50.0%
Defense
100.0%
Knockdowns / 15 min
3.00
Time at distance
7.7%
Grappling & control
Loiseau
Weir
Takedowns / 15 min
0.00
Takedown accuracy
Takedown defense
0.0%
Sub attempts / 15 min
4.50
Control share
29.2%
Strike target map
Loiseau
  • Head0%(0)div 64%
  • Body0%(0)div 19%
  • Legs0%(0)div 17%
  • No strike data on record.
Weir
  • Head100%(23)div 64%
  • Body0%(0)div 19%
  • Legs0%(0)div 17%

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

David Loiseau

No UFC fights on record.

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

Mark Weir
CloseSSTDKDCtrl

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