Castres Olympique vs Ospreys
What the model says about this fixture, at either ground and at a neutral one, with the record behind it. Ratings as at 2026-10-19.
Castres Olympique 61.8%draw 2.5%35.7% OspreysOspreys 70.4%draw 2.5%27.1% Castres OlympiqueCastres Olympique 44.0%draw 2.5%53.5% OspreysEach 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.
Make it your call
Pick your own scoreline for Castres Olympique v Ospreys, see where it lands among the simulated runs, and save a card to post.
Build a shareable predictionHow the runs finished
Winning margin across 5,000 simulations of this fixture. Bars right of the centre are Castres Olympique 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 15 Ospreys and 21 Castres Olympique, half of them between 5 Ospreys and 12 Castres Olympique, with the middle run at 3 Castres Olympique.
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 22-19 on a tight afternoon and 32-29 on an open one.
Why Castres Olympique are favoured
How the model arrives at the chance of Castres Olympique 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 Castres Olympique, a bar to the left helps Ospreys.
Castres Olympique 1456, Ospreys 1567 — 111 points, favouring Ospreys
Castres Olympique are at home
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.
Head to head
Castres Olympique0–0–1Ospreys1 meeting, 2020 to 2020 · Ospreys by 24.0 on average
| Date | Match | Competition | Venue |
|---|---|---|---|
| 2020-12-12 | Ospreys 39–15 Castres Olympique | European Challenge Cup | Swansea.com Stadium |
None of this feeds the forecast: both ratings already contain these results.