Cardiff City FC scores shown first. Bivariate Poisson with team xG from recent form — most-likely score ≠ most-likely winner.
Probabilities derived from a Poisson model on expected goals. Edge % shown only when the book posts both sides of a market.
Joint probability comes from the score grid (the truth). Naïve is what a book gets by multiplying legs — they undershoot correlated positive legs like "home + BTTS" and overshoot anti-correlated ones like "draw + over 2.5". Buy positive correlation; avoid negative.
Model probabilities Cardiff City FC 44.8% · Draw 25.0% · Watford FC 30.2% Why Cardiff City FC is favoured Elo essentially level (1490 vs 1489) — winner depends on context. Recent: Cardiff City FC 1W-4D-4L · Watford FC 2W-2D-5L (last 9). Goal differential per game: Cardiff City FC -0.3, Watford FC -0.8. Form depth Cardiff City FC: avg 1.2 goals scored, 1.6 conceded per game (1/4 at home, 0/5 on the road). Watford FC: avg 0.8 goals scored, 1.6 conceded per game (2/5 at home, 0/4 on the road). Watford FC on a 3-match losing streak. Goals expectation Model expects ~2.6 total goals (Cardiff City FC 1.4, Watford FC 1.2) — right around 2.5. But — counter-arguments Elo confidence is low (15%) — ratings are based on a thin sample, so the prediction itself is wider than the headline number suggests. Head-to-head 2 prior meetings — Cardiff City FC 0W, 2D, Watford FC 0W (draws are common). Last 3: 1-1, 1-2, 0-1. Calibration Raw model: 46.1% home · Platt-calibrated down to 44.8% based on historical reliability across this sport's graded matches. Context Watford FC has 2 more days of rest (Cardiff City FC 56d, Watford FC 58d). Confidence note Elo data on these teams is thin (15% sample-size confidence); this is a low-conviction match overall — bet only with strong reason from outside the model.