Match predictor

Ireland vs South Africa

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
Ireland at home26-23 average
Ireland 48.3%draw 2.6%49.1% South Africa
South Africa at home31-18 average
South Africa 66.3%draw 2.6%31.1% Ireland
Neutral ground22-27 average
Ireland 40.0%draw 2.6%57.4% South Africa

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

Margin percentiles

p10 South Africa +22p25 South Africa +10p50 levelp75 Ireland +7p90 Ireland +16

Eight runs in ten finished between 22 South Africa and 16 Ireland, with the middle run at level.

Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 30 and 70 points in eight runs out of ten — so one bar covers many scores. The middle run above is 19-19 on a tight afternoon and 30-30 on an open one.

Why Ireland are not favoured

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

Even match50.0%
Rating gap-16.2 pp

Ireland 1884, South Africa 2036 — 152 points, favouring South Africa

Venue+6.7 pp

Ireland 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.

Ireland win48.3%

Head to head

Ireland10120South Africa

31 meetings, 1906 to 2025 · South Africa by 4.4 on average

Last 10: 604 · Ireland by 3.4 on average

DateMatchCompetitionVenue
2025-11-22Ireland 1324 South AfricaAviva Stadium
2024-07-13South Africa 2425 IrelandHollywoodbets Kings Park
2024-07-06South Africa 2720 IrelandLoftus Versfeld
2023-09-23South Africa 813 IrelandStade de France(neutral)
2022-11-05Ireland 1916 South AfricaAviva Stadium

The 5 most recent meetings; the record above covers all 31. 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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