Match predictor

Bayonne vs Scarlets

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 home28-22 average
Bayonne 62.4%draw 2.5%35.1% Scarlets
Scarlets at home28-22 average
Scarlets 61.4%draw 2.5%36.1% Bayonne
Neutral ground25-25 average
Bayonne 48.4%draw 2.5%49.1% Scarlets

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 Scarlets +13p25 Scarlets +4p50 Bayonne +4p75 Bayonne +14p90 Bayonne +24

Eight runs in ten finished between 13 Scarlets and 24 Bayonne, with the middle run at 4 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 22-18 on a tight afternoon and 32-28 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 Scarlets.

Even match50.0%
Rating gap+6.3 pp

Bayonne 1413, Scarlets 1334 — 79 points, favouring Bayonne

Venue+11.4 pp

Bayonne are at home

Form and context-5.3 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 win62.4%

Head to head

Bayonne104Scarlets

5 meetings, 2019 to 2024 · Scarlets by 18.6 on average

DateMatchCompetitionVenue
2024-12-07Bayonne 1716 ScarletsEuropean Challenge CupStade Jean Dauger
2023-01-21Bayonne 720 ScarletsEuropean Challenge CupStade Jean Dauger
2022-12-11Scarlets 397 BayonneEuropean Challenge CupParc y Scarlets
2019-12-14Scarlets 465 BayonneEuropean Challenge CupParc y Scarlets
2019-12-07Bayonne 1119 ScarletsEuropean Challenge CupStade Jean Dauger

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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