Saint Etienne v Grenoble — prediction, stats and goal analysis

Ligue 2 · Saturday, 22 August 2026. Final score 4–0 (half-time 3–0). Rebuilt from the season as it stood that morning, our rating would have been 53% for over 2.5 goals. This match is older than our frozen ratings ledger, which keeps 30 days, so that figure is a reconstruction from pre-match data rather than a number we published at the time — a distinction worth making, because only the frozen ones prove what we actually said beforehand.

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Our ratings for this match

MarketYesNoOur call
Over 2.5 goals53%47%Over
Over 3.5 goals33%67%no pick
Both teams to score54%46%Yes

The result model puts Saint Etienne at 69%, the draw at 17% and Grenoble at 14%, from expected goals of 2.58 and 1.1.

How we got this number

The league sets the starting point. Ligue 2 has produced over 2.5 goals in 46% of its matches, and that is where a team with no record of its own would sit.

Each side's own record. Saint Etienne have 2 in 2 this season (1 of 1 at home), Grenoble 1 in 2 (1 of 1 away). Those records are pulled toward the league rate with the weight of about 24 matches — enough that two or three unusual games cannot swing a rating — giving 50% and 47%.

Last season still counts, briefly. With 2 and 2 games played this season, last season's rates are still blended in and fade out entirely by game 40 — the point at which our testing showed they stop adding accuracy. A single season is part luck, so each club's record is first pulled toward the league average by 34 games' weight. That moves the two figures to 52% and 43%.

The mix. Weighted 40% home side, 40% away side and 20% league — the split that beat every alternative across 30,582 matches of testing — that gives 47%.

Head to head. These sides have met 3 times in three years, producing over 2.5 goals in 0%. That nudges the number 5% of the way toward the head-to-head pattern — deliberately small, because fixtures change more than reputations do — landing on 45%.

Goal expectation. Separately a Poisson model built from attack and defence strength — using real expected-goals data where the league has it — puts this match at 71%, from expected goals of 2.58 for Saint Etienne and 1.1 for Grenoble. Folding in 30% of that view gives 53%.

This breakdown is generated from the same inputs the rating uses, so it cannot describe a calculation we did not perform. The full model is set out in the methodology.

Season form

TeamGamesO2.5O3.5BTTS
Saint Etienne2100%50%50%
Grenoble250%50%50%

Head to head

14 Mar 26Grenoble 0–0 Saint EtienneU2.5
30 Aug 25Saint Etienne 1–1 GrenobleU2.5
23 Apr 24Grenoble 0–2 Saint EtienneU2.5
5 Aug 23Saint Etienne 0–1 GrenobleU2.5
17 Apr 23Grenoble 0–2 Saint EtienneU2.5
1 Oct 22Saint Etienne 2–2 GrenobleO2.5

More: Saint Etienne season stats · Grenoble season stats · Ligue 2 table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.