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Fischietto finale

Premier League · matchday 9

Real dataStatistics onlyUpdated 26/10 08:39

Every prediction is saved before the match and compared with the result.

In short

Over 24 matches the model got the outcome (1, X or 2) right 33% of the time. Always picking a home win would be right about 40% of the time. Its percentages are 1% less wrong than those taken from league averages alone.

With fewer than 30 matches this is only a first look: the numbers can change a lot.

How the last round went

23 October – 25 October · outcome right 1 out of 10 (10%) · exact score right 2 times

The surprises

Chelsea – Tottenham · 0-2outcome given 18%
Man United – Bournemouth · 0-3outcome given 24%
Aston Villa – Man City · 2-1outcome given 25%

The best predictions

Arsenal – Everton · 2-01 at 60% ✓
Model performance
33% 1X2 right
Sample still growing

8 correct predictions out of 24. Last 12: 1 correct. More matches are needed before judging form.

33%
✕✕✕✕✕✕✓✕✕✕✓✓
1X2 outcome right
8 of 24
33%
Average stated probability
47%
if they match, the model is calibrated
Model reliability
Sample still growing

Real results are needed to calculate a reliable score. No correction is applied.

Lab · look back

24 predictions

Comparison on predictions actually saved before the result. No prediction is rebuilt after the fact.

10%Last 10 · 10 matches
Brier 0.76
33%Last 25 · 24 matches · incomplete sample
Brier 0.64
33%Last 50 · 24 matches · incomplete sample
Brier 0.64
MarketHitActualGap
110/2442%gap -1%
29/2438%gap +6%
X5/2421%gap -5%
1X15/2463%gap -6%
X214/2458%gap +1%
Over 1.519/2479%gap +2%
Over 2.510/2442%gap -11%
Under 2.514/2458%gap +11%
Under 3.518/2475%gap +6%
Both score10/2442%gap -13%

Model quality

Model error
0.64
the lower, the better
Simple method
0.65
league averages only
Over/Under 2.5
13 of 24
54%
Both teams score
13 of 24
54%

The model is 1% less wrong than the simple method. With 24 matches the figure is still shaky: it needs at least fifty matches, ideally a hundred.

When I say 60%, does it happen?

40%60%80%100%0%50%100%Stated probabilityActual hitsunder 45%: stated 41%, actual 15% over 13 matches1345-55%: stated 48%, actual 43% over 7 matches755-65%: stated 60%, actual 50% over 2 matches265% or more: stated 69%, actual 100% over 2 matches2

Each point is a band of predictions (the number next to it says how many matches). The closer the points are to the dashed line, the more reliable the percentages.

ProbabilityHitsStatedActual
under 45%41%15%
45-55%48%43%
55-65%60%50%
65% or more69%100%

If "Stated" and "Actual" are close, the percentages are reliable.

Does the news help?

Over 23 matches: with the news the error is 0.38, with statistics alone 0.38. Too early to say. Outcome right: 8 of 23 with the news, 8 of 23 with statistics alone.

New model or old?

Over 24 matches, statistics only: error 0.38 for the current model, 0.40 for the first version. Too early to say.

Reliability by market

A 0–100 indicator built from calibration and Brier score. It is descriptive, not a guarantee of results. The model's picks use the history only when there are at least 10 observations per category.

1X2—
53 of 120 selections · 24 matchespred. 45%actual 44%
Both score—
24 of 48 selections · 24 matchespred. 50%actual 50%
Over/Under—
61 of 96 selections · 24 matchespred. 61%actual 64%
Combination—
80 of 192 selections · 24 matchespred. 41%actual 42%
Exact score—
3 of 24 selections · 24 matchespred. 12%actual 13%

Sample still too small: the system keeps collecting data without changing the model's probabilities.

Latest predictions

newest → oldest
Sunderland – Leeds United2 given 40% · final score 0-0✕
Liverpool – Brighton Hove2 given 45% · final score 2-0✕
Crystal Palace – Newcastle1 given 41% · final score 0-2✕
Man United – Bournemouth1 given 52% · final score 0-3✕
Hull City – Brentford1 given 38% · final score 1-1✕
Chelsea – Tottenham1 given 60% · final score 0-2✕
Arsenal – Everton1 given 60% · final score 2-0✓
Coventry City – Fulham1 given 41% · final score 0-1✕
Aston Villa – Man City2 given 51% · final score 2-1✕
Ipswich Town – Nottingham1 given 43% · final score 1-1✕
Tottenham – Coventry City1 given 44% · final score 3-1✓
Nottingham – Arsenal2 given 47% · final score 0-1✓
Bournemouth – Sunderland1 given 47% · final score 2-0✓
Leeds United – Man United1 given 40% · final score 1-1✕
Brighton Hove – Crystal Palace1 given 65% · final score 5-0✓
Newcastle – Aston Villa1 given 45% · final score 0-1✕
Fulham – Hull City2 given 37% · final score 1-0✕
Man City – Ipswich Town1 given 73% · final score 3-2✓
Brentford – Liverpool1 given 47% · final score 1-2✕
Everton – Chelsea1 given 43% · final score 0-2✕
Coventry City – Newcastle2 given 44% · final score 4-1✕
Liverpool – Man City2 given 50% · final score 0-3✓
Hull City – Everton1 given 43% · final score 2-2✕
Crystal Palace – Nottingham1 given 39% · final score 3-1✓