Match predictor

Samoa vs Tonga

What the model says about this fixture, at either ground and at a neutral one, with the record behind it. Ratings as at 2026-08-23.

Who wins, and where it is played
Samoa at home33-18 average
Samoa 79.3%draw 2.3%18.4% Tonga
Tonga at home21-30 average
Tonga 27.3%draw 2.3%70.4% Samoa
Neutral ground32-19 average
Samoa 76.5%draw 2.3%21.2% Tonga

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

Margin percentiles

p10 Tonga +9p25 Samoa +1p50 Samoa +11p75 Samoa +24p90 Samoa +37

Eight runs in ten finished between 9 Tonga and 37 Samoa, with the middle run at 11 Samoa.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 31 and 72 points in eight runs out of ten — so one bar covers many scores. The middle run above is 25-14 on a tight afternoon and 36-25 on an open one.

Why Samoa are favoured

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

Even match50.0%
Rating gap+18.7 pp

Samoa 1150, Tonga 938 — 213 points, favouring Samoa

Venue+5.4 pp

Samoa are at home

Form and context+5.2 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.

Samoa win79.3%

Head to head

Samoa301Tonga

4 meetings, 2007 to 2023 · Samoa by 18.0 on average

DateMatchCompetitionVenue
2023-08-05Samoa 349 TongaApia Park
2021-07-17Tonga 1537 SamoaFMG Stadium Waikato
2021-07-10Samoa 4213 TongaGo Media Stadium
2007-09-16Samoa 1519 TongaRugby World CupStade de la Mosson(neutral)

A dash under Competition means the record does not name one, which is common — most rows on file carry no competition. 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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