Leinster vs Northampton Saints
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.
Leinster 66.9%draw 2.5%30.6% Northampton SaintsNorthampton Saints 54.9%draw 2.5%42.6% LeinsterLeinster 54.7%draw 2.5%42.8% Northampton SaintsEach 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 Leinster wins; the faded bars at each end hold everything beyond 75 points.
Margin percentiles
Eight runs in ten finished between 14 Northampton Saints and 22 Leinster, with the middle run at 4 Leinster.
Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 29 and 68 points in eight runs out of ten — so one bar covers many scores. The middle run above is 21-17 on a tight afternoon and 31-27 on an open one.
Why Leinster are favoured
Starting from an even match and adding what the model reads, in percentage points of win probability. Positive favours Leinster, negative favours Northampton Saints.
Leinster 1912, Northampton Saints 1918 — 6 points, favouring Northampton Saints
Leinster are at home
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.
Head to head
Leinster6–0–1Northampton Saints7 meetings, 2016 to 2025 · Leinster by 20.9 on average
| Date | Match | Competition | Venue |
|---|---|---|---|
| 2025-05-03 | Leinster 34–37 Northampton Saints | European Champions Cup | Aviva Stadium |
| 2024-05-04 | Leinster 20–17 Northampton Saints | European Champions Cup | Croke Park |
| 2020-12-19 | Leinster 35–19 Northampton Saints | European Champions Cup | Laya Arena |
| 2019-12-14 | Leinster 50–21 Northampton Saints | European Champions Cup | Aviva Stadium |
| 2019-12-07 | Northampton Saints 16–43 Leinster | European Champions Cup | cinch Stadium at Franklin's Gardens |
The 5 most recent meetings; the record above covers all 7. None of this feeds the forecast: both ratings already contain these results.