Match predictor

Bristol Rugby vs Cardiff Blues

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
Bristol Rugby at home28-21 average
Bristol Rugby 62.0%draw 2.5%35.5% Cardiff Blues
Cardiff Blues at home28-21 average
Cardiff Blues 67.4%draw 2.5%30.1% Bristol Rugby
Neutral ground25-24 average
Bristol Rugby 45.9%draw 2.5%51.6% Cardiff Blues

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 Bristol Rugby wins; the faded bars at each end hold everything beyond 75 points.

Margin percentiles

p10 Cardiff Blues +11p25 Cardiff Blues +3p50 Bristol Rugby +4p75 Bristol Rugby +15p90 Bristol Rugby +27

Eight runs in ten finished between 11 Cardiff Blues and 27 Bristol Rugby, with the middle run at 4 Bristol Rugby.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 30 and 70 points in eight runs out of ten — so one bar covers many scores. The middle run above is 21-17 on a tight afternoon and 32-28 on an open one.

Why Bristol Rugby are favoured

Starting from an even match and adding what the model reads, in percentage points of win probability. Positive favours Bristol Rugby, negative favours Cardiff Blues.

Even match50.0%
Rating gap+0.1 pp

Bristol Rugby 1588, Cardiff Blues 1573 — 15 points, favouring Bristol Rugby

Venue+12.1 pp

Bristol Rugby are at home

Form and context-0.2 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.

Bristol Rugby win62.0%

Head to head

Bristol Rugby002Cardiff Blues

2 meetings, 2016 to 2017 · Cardiff Blues by 14.5 on average

DateMatchCompetitionVenue
2017-01-21Cardiff Blues 3721 Bristol RugbyEuropean Challenge CupCardiff Arms Park
2016-10-14Bristol Rugby 2033 Cardiff BluesEuropean Challenge CupAshton Gate

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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