Match predictor

Bayonne vs Lyon

What the model says about this fixture, at either ground and at a neutral one, with the record behind it. Ratings as at 2026-08-24.

Who wins, and where it is played
Bayonne at home25-25 average
Bayonne 51.5%draw 2.5%46.0% Lyon
Lyon at home28-22 average
Lyon 67.8%draw 2.5%29.7% Bayonne
Neutral ground23-27 average
Bayonne 39.5%draw 2.5%58.0% Lyon

Each figure is 5,000 simulations of this fixture. The score is where those runs are centred, not a likely scoreline — a rugby result is spread far too widely for any single one to be likely.

How the runs finished

Winning margin across 5,000 simulations of this fixture. Bars right of the centre are Bayonne wins; the faded bars at each end hold everything beyond 75 points.

Margin percentiles

p10 Lyon +16p25 Lyon +7p50 Bayonne +1p75 Bayonne +8p90 Bayonne +17

Eight runs in ten finished between 16 Lyon and 17 Bayonne, with the middle run at 1 Bayonne.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 31 and 71 points in eight runs out of ten — so one bar covers many scores. The middle run above is 20-19 on a tight afternoon and 31-30 on an open one.

Why Bayonne are favoured

Starting from an even match and adding what the model reads, in percentage points of win probability. Positive favours Bayonne, negative favours Lyon.

Even match50.0%
Rating gap-2.7 pp

Bayonne 1413, Lyon 1429 — 16 points, favouring Lyon

Venue+12.0 pp

Bayonne are at home

Form and context-7.8 pp

Recent results, head-to-head record and rest days, as the XGBoost heads weigh them. Deliberately capped, so it can nudge the rating but never overrule it.

Bayonne win51.5%

Head to head

Bayonne617Lyon

14 meetings, 2015 to 2026 · Lyon by 9.5 on average

Last 10: 505 · Lyon by 4.6 on average

DateMatchCompetitionVenue
2026-05-16Lyon 4235 BayonneTop 14Matmut Stadium de Gerland
2025-11-29Bayonne 2220 LyonTop 14Stade Jean Dauger
2025-03-29Bayonne 2814 LyonTop 14Stade Jean Dauger
2024-10-26Lyon 3849 BayonneTop 14Matmut Stadium de Gerland
2024-03-02Bayonne 3910 LyonTop 14Stade Jean Dauger

The 5 most recent meetings; the record above covers all 14. None of this feeds the forecast: both ratings already contain these results.

Rugby Tournament Predictor — unofficial, and not affiliated with any union, club or competition. About and sourcesForecasts are probabilities, not predictions of one result.

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