Lab

Where was Vesta right, and where wrong?

Over 348 league matches of Roma since 2017-18, each forecast by a model that had not seen that season, Vesta's likeliest result happened 62 times in 100; it said 54. Draws: said 24, happened 22 in 100.

Since its public record began on 30 Sep 2026: 51 league matches settled, the likeliest result happened 61 times in 100 (Vesta said 50). Every published forecast

League data to · Vesta · out of sample, 2017-18 on

Free
Matches348each forecast before its season
Likeliest result happened62 in 100Vesta said 54
Draws22 in 100Vesta said 24
Goals a match2.74Vesta expected 2.89
Likeliest score happened12 in 100Vesta said 12

When Vesta says N in 100, does it happen N times?Said v happened

every home win, draw and away win chance, grouped in bands of 10; on the line = exactly right
00252550507575100100 Vesta said (in 100)
Chance bandChancesSaidHappenedGap
0–10 in 100247.90.0−7.9
10–20 in 10017315.813.9−1.9
20–30 in 10042225.021.3−3.7
30–40 in 10012534.931.2−3.7
40–50 in 1008645.255.8+10.6
50–60 in 10011054.660.0+5.4
60–70 in 1007264.776.4+11.7
70–80 in 1002573.376.0+2.7

Which clubs beat Vesta's expectationsClubs v Vesta

points won against the points Vesta's forecasts gave (3 × win + draw), these matches
Underrated: more points than expected
ClubMatchesPointsExpectedGap
Roma348621604.0+17.0
AC Milan183324.7+8.3
Atalanta193528.2+6.8
Inter193731.4+5.6
Bologna182217.4+4.6
Napoli183329.2+3.8
Juventus183127.5+3.5
SPAL 2013663.5+2.5
Venezia442.9+1.1
Como576.4+0.6
Cremonese432.7+0.3
Chievo422.1−0.1
Overrated: fewer points than expected
ClubMatchesPointsExpectedGap
Torino191117.1−6.1
Lecce1127.9−5.9
Fiorentina191620.9−4.9
Monza625.1−3.1
Spezia614.0−3.0
Lazio182022.8−2.8
Frosinone402.5−2.5
Udinese181315.2−2.2
Cagliari16911.0−2.0
Crotone401.9−1.9
Pisa201.7−1.7
Salernitana623.7−1.7

League by league, season by seasonLeague by league

Roma's matches; the current season so far
CSV
SeasonLeagueMatchesLikeliest saidHappenedDraws saidDrawsGoals expectedGoalsRPS
2026-27Serie A6536725332.812.830.108
2025-26Serie A38507628112.452.370.185
2024-25Serie A38506627242.712.390.173
2023-24Serie A38516126242.642.920.172
2022-23Serie A38546125242.712.320.188
2021-22Serie A38546124243.052.680.195
2020-21Serie A38566123243.143.240.180
2019-20Serie A38545523183.053.370.203
2018-19Serie A38565322323.043.000.178
2017-18Serie A38616321213.212.340.175

Each season from 2017-18 was hidden from Vesta and forecast with a model fitted only on the seasons before it, the same model that publishes today's forecasts (checked Tue 13 Oct 2026). These are the forecasts of past seasons, not the published ones: the public record of forecasts made before kick-off starts on 30 Sep 2026 and lives in Vesta's track record.

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