Season script report for one WTA player (upsets vs expected)

Season script report for one player: how often our model's favorite actually lost in their matches (upsets) versus how often the model itself expected it for that exact schedule (the sum of the priced favorite-loses probabilities). player accepts the as-observed display name ("Jannik Sinner") or its slug ("jannik-sinner"). Each season row carries actual vs expected upsets, the difference with a 95% interval, and a tier: on_script (fewer upsets than priced, shown on the site as "Straight sets"), in_line ("On serve") or chaos ("Wild card"). Verdicts are SEASON-level by design — being hard to predict does not persist year over year, so there is no career score. source distinguishes the as-published daily record (recent seasons) from a strict out-of-sample backtest of the current model (earlier seasons); one source per season, never mixed. Use /tennis/... for the ATP tour and /wta/... for the WTA tour.