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Argentina vs Japan

What the model says about this fixture, at either ground and at a neutral one, with the record behind it. Ratings as at 2026-10-18.

Who wins, and where it is played
Argentina at home33-17 average
Argentina 84.2%draw 2.4%13.4% Japan
Japan at home23-28 average
Japan 33.9%draw 2.4%63.7% Argentina
Neutral ground30-20 average
Argentina 75.0%draw 2.4%22.6% Japan

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.

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How the runs finished

Winning margin across 5,000 simulations of this fixture. Bars right of the centre are Argentina wins; the faded bars at each end hold everything beyond 75 points.

Margin percentiles

  • Middle 8 in 10
  • Middle half
  • Median
  • Level
  • Average

Eight runs in ten finished between 6 Japan and 38 Argentina, half of them between 2 Argentina and 25 Argentina, with the middle run at 11 Argentina.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 31 and 71 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 Argentina are favoured

How the model arrives at the chance of Argentina winning. It starts at an even 50%, and each line below adds to that or takes from it, in percentage points (pp): a bar to the right helps Argentina, a bar to the left helps Japan.

Even match50.0%
Rating gap+17.2 pp

Argentina 2036, Japan 1846 — 190 points, favouring Argentina

Venue+9.4 pp

Argentina are at home

Form and context+7.6 pp

Recent results, past meetings between the two sides, and days of rest. It has a limit, so it can nudge the rating but never overrule it.

Argentina win84.2%
Japan win13.4%
Draw2.4%

Head to head

Argentina6–0–1Japan

7 meetings, 1993 to 2023 · Argentina by 16.0 on average

DateMatchCompetitionVenue
2023-10-08Japan 27–39 ArgentinaRugby World CupStade de la Beaujoire
2016-11-05Japan 20–54 Argentina—Prince Chichibu Memorial Stadium
2005-04-23Argentina 68–36 Japan—Buenos Aires Cricket & Rugby Club
1999-10-16Argentina 33–12 JapanRugby World CupPrincipality Stadium(neutral)
1998-09-15Japan 44–29 Argentina—Prince Chichibu Memorial Stadium

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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