FC Barcelona 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 FC Barcelona 70.6% · Draw 14.0% · Rayo Vallecano de Madrid 15.4% Why FC Barcelona is favoured FC Barcelona's Elo (1783) is +300 over Rayo Vallecano de Madrid (1483); high confidence. Recent: FC Barcelona 2W-0D-0L · Rayo Vallecano de Madrid 0W-1D-1L (last 2). Goal differential per game: FC Barcelona +3.5, Rayo Vallecano de Madrid -0.5. Form depth FC Barcelona: avg 3.5 goals scored, 0.0 conceded per game (1/1 at home, 1/1 on the road). Rayo Vallecano de Madrid: avg 1.0 goals scored, 1.5 conceded per game (0/1 at home, 0/1 on the road). FC Barcelona on a 2-match winning streak. Head-to-head 3 prior meetings — FC Barcelona 0W, 3D, Rayo Vallecano de Madrid 0W (draws are common). Last 3: 1-0, 1-1, 1-0. Calibration Raw model: 77.6% home · Platt-calibrated down to 70.6% based on historical reliability across this sport's graded matches. Context Rayo Vallecano de Madrid has 8 more days of rest (FC Barcelona 7d, Rayo Vallecano de Madrid 15d).