Match predictor

Japan vs Scotland

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
Japan at home21-31 average
Japan 14.4%84.6% Scotland
Scotland at home38-14 average
Scotland 89.3%9.7% Japan
Neutral ground18-34 average
Japan 11.9%draw 1.1%87.0% Scotland

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

Margin percentiles

p10 Scotland +31p25 Scotland +20p50 Scotland +9p75 Scotland +2p90 Japan +7

Eight runs in ten finished between 31 Scotland and 7 Japan, with the middle run at 9 Scotland.

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 25-16 on a tight afternoon and 36-27 on an open one.

Why Japan are not favoured

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

Even match50.0%
Rating gap-35.3 pp

Japan 1310, Scotland 1730 — 420 points, favouring Scotland

Venue+4.0 pp

Japan are at home

Form and context-4.3 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.

Japan win14.4%

Head to head

Japan106Scotland

7 meetings, 1991 to 2021 · Scotland by 16.3 on average

DateMatchCompetitionVenue
2021-11-20Scotland 2920 JapanScottish Gas Murrayfield
2019-10-13Japan 2821 ScotlandRugby World CupInternational Stadium Yokohama
2016-06-25Japan 1621 ScotlandAjinomoto Stadium
2016-06-18Japan 1326 ScotlandCity of Toyota Stadium
2015-09-23Scotland 4510 JapanRugby World CupKingsholm(neutral)

The 5 most recent meetings; the record above covers all 7. 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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