Match predictor

Bulls vs Castres Olympique

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
Bulls at home30-21 average
Bulls 73.4%draw 2.5%24.1% Castres Olympique
Castres Olympique at home25-26 average
Castres Olympique 42.4%draw 2.5%55.1% Bulls
Neutral ground28-23 average
Bulls 65.4%draw 2.5%32.1% Castres Olympique

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

Margin percentiles

p10 Castres Olympique +8p25 levelp50 Bulls +8p75 Bulls +18p90 Bulls +30

Eight runs in ten finished between 8 Castres Olympique and 30 Bulls, with the middle run at 8 Bulls.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 32 and 74 points in eight runs out of ten — so one bar covers many scores. The middle run above is 24-16 on a tight afternoon and 35-27 on an open one.

Why Bulls are favoured

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

Even match50.0%
Rating gap+23.2 pp

Bulls 1769, Castres Olympique 1485 — 284 points, favouring Bulls

Venue+8.0 pp

Bulls 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.

Bulls win73.4%

Head to head

Bulls001Castres Olympique

1 meeting, 2025 to 2025 · Castres Olympique by 39.0 on average

DateMatchCompetitionVenue
2025-01-11Castres Olympique 4910 BullsEuropean Champions CupStade Pierre Fabre

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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