Match predictor

Connacht vs Lions

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
Connacht at home28-20 average
Connacht 66.0%draw 2.5%31.5% Lions
Lions at home27-21 average
Lions 61.3%draw 2.5%36.2% Connacht
Neutral ground24-24 average
Connacht 51.2%draw 2.5%46.3% Lions

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

Margin percentiles

p10 Lions +12p25 Lions +2p50 Connacht +5p75 Connacht +15p90 Connacht +26

Eight runs in ten finished between 12 Lions and 26 Connacht, with the middle run at 5 Connacht.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 30 and 69 points in eight runs out of ten — so one bar covers many scores. The middle run above is 21-16 on a tight afternoon and 32-27 on an open one.

Why Connacht are favoured

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

Even match50.0%
Rating gap+5.7 pp

Connacht 1752, Lions 1678 — 73 points, favouring Connacht

Venue+11.5 pp

Connacht are at home

Form and context-1.2 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.

Connacht win66.0%

Head to head

Connacht203Lions

5 meetings, 2022 to 2026 · Lions by 6.6 on average

DateMatchCompetitionVenue
2026-04-25Lions 3321 ConnachtUnited Rugby ChampionshipEllis Park
2025-04-26Lions 267 ConnachtUnited Rugby ChampionshipEllis Park
2024-03-23Connacht 1438 LionsUnited Rugby ChampionshipDexcom Stadium
2023-01-28Connacht 4324 LionsUnited Rugby ChampionshipDexcom Stadium
2022-04-23Lions 3033 ConnachtUnited Rugby ChampionshipEllis Park

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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