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Cardiff Blues v Harlequins

Set a scoreline and see where it sits among the 5,000 simulated runs behind this fixture. Ratings as at 2026-10-19.

Your scoreline
Cardiff Blues
–
Harlequins

The steppers skip 1, 2 and 4. Points come in fives, threes and twos with a conversion needing a try in front of it, so no match has ever finished on any of them.

Where that lands
Harlequins by 75+levelCardiff Blues by 75+

17.1% of runs finished in this bin — Cardiff Blues by 3 to 7.

52 points is around the 52nd percentile of the total — the middle run scored 51.

Those two figures are separate readings and are not multiplied together. The simulation draws the gap and the amount of scoring independently, so one bar of the histogram covers many scorelines and the payload holds nothing about which of them came up with which gap.

What the model says
Cardiff Blues 65.5%Harlequins 32.0%average 29–23

That is the model’s own average scoreline. Nothing here scores any of it. The model’s gap is an average over both winners and yours is one afternoon, so the two are different kinds of number rather than one being right. How the model works.

Why Cardiff Blues are favoured

How the model arrives at the chance of Cardiff Blues 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 Cardiff Blues, a bar to the left helps Harlequins.

Even match50.0%
Rating gap+7.7 pp

Cardiff Blues 1645, Harlequins 1542 — 103 points, favouring Cardiff Blues

Venue+15.6 pp

Cardiff Blues are at home

Form and context-7.8 pp

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.

Cardiff Blues win65.5%
Harlequins win32.0%
Draw2.5%
The fixture

Cardiff Blues and Harlequins have no fixture on the published schedule, so there is no ground, no kick-off forecast and no team sheet to put beside this. The prediction itself does not need any of them.

5 meetings — Cardiff Blues 0, Harlequins 5. Last 2024: Cardiff Blues 15–54 Harlequins.

None of this reaches the model. Weather is not a feature, team selection is not a feature and the record is already inside both ratings, so the probability above does not move because any of it changed.

Cardiff Blues against Harlequins, as a shareable card

Instagram has no way for a website to post on your behalf and does not unfurl links, so a post there is the saved image with a caption. The copied link unfurls into the same card on X, WhatsApp, Slack and Facebook.

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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Cardiff Blues 29–23 Harlequins | RTP