Harlequins vs Leinster
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.
Harlequins 46.3%draw 2.5%51.2% LeinsterLeinster 78.9%draw 2.5%18.6% HarlequinsHarlequins 33.9%draw 2.5%63.6% LeinsterEach 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 Harlequins wins; the faded bars at each end hold everything beyond 75 points.
Margin percentiles
Eight runs in ten finished between 22 Leinster and 14 Harlequins, with the middle run at 1 Leinster.
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 20-19 on a tight afternoon and 31-30 on an open one.
Why Harlequins are not favoured
Starting from an even match and adding what the model reads, in percentage points of win probability. Positive favours Harlequins, negative favours Leinster.
Harlequins 1668, Leinster 1912 — 244 points, favouring Leinster
Harlequins 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
Harlequins0–0–2Leinster2 meetings, 2025 to 2025 · Leinster by 39.5 on average
| Date | Match | Competition | Venue |
|---|---|---|---|
| 2025-12-06 | Leinster 45–28 Harlequins | European Champions Cup | Aviva Stadium |
| 2025-04-05 | Leinster 62–0 Harlequins | European Champions Cup | Croke Park |
None of this feeds the forecast: both ratings already contain these results.