Exeter Chiefs vs Lyon
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.
Exeter Chiefs 80.3%draw 2.5%17.2% LyonLyon 39.1%draw 2.5%58.4% Exeter ChiefsExeter Chiefs 67.9%draw 2.5%29.6% LyonEach 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 Exeter Chiefs wins; the faded bars at each end hold everything beyond 75 points.
Margin percentiles
Eight runs in ten finished between 3 Lyon and 34 Exeter Chiefs, with the middle run at 11 Exeter Chiefs.
Those are gaps rather than scorelines. How much scoring the match produces is drawn separately — between 31 and 73 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 Exeter Chiefs are favoured
Starting from an even match and adding what the model reads, in percentage points of win probability. Positive favours Exeter Chiefs, negative favours Lyon.
Exeter Chiefs 1754, Lyon 1429 — 325 points, favouring Exeter Chiefs
Exeter Chiefs 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
Exeter Chiefs1–0–0Lyon1 meeting, 2021 to 2021 · Exeter Chiefs by 22.0 on average
| Date | Match | Competition | Venue |
|---|---|---|---|
| 2021-04-03 | Exeter Chiefs 47–25 Lyon | European Champions Cup | Sandy Park |
None of this feeds the forecast: both ratings already contain these results.