{
  "total_matches": 100,
  "data_source": "Football-Data.co.uk (real match results & B365/Pinnacle/WH odds) + 港彩通 pari-mutuel inversion model (HKJC estimates)",
  "data_source_url": "https://www.football-data.co.uk/englandm.php",
  "license": "CC-BY-4.0",
  "last_updated": "2026-05-12",
  "transparency": {
    "real_fields": [
      "date",
      "home",
      "away",
      "ft_home",
      "ft_away",
      "ht_home",
      "ht_away",
      "b365_h",
      "b365_d",
      "b365_a",
      "pinnacle_h",
      "pinnacle_d",
      "pinnacle_a",
      "wh_h",
      "wh_d",
      "wh_a"
    ],
    "estimated_fields": [
      "hkjc_h_est",
      "hkjc_d_est",
      "hkjc_a_est",
      "avg_overseas_vs_hkjc_diff_pct"
    ],
    "model": "HKJC odds estimated by inverting Pinnacle vig and applying 11.5% takeout + favorite-longshot bias adjustment. HKJC does not publish historical odds data; all `hkjc_*_est` columns are MODELED, not scraped."
  },
  "date_range": {
    "start": "2026-02-12",
    "end": "2026-05-11"
  },
  "summary": {
    "avg_overseas_vs_hkjc_diff_pct": 8.7,
    "median_overseas_vs_hkjc_diff_pct": 8.71,
    "max_match_avg_diff_pct": 14.97,
    "min_match_avg_diff_pct": 4.66,
    "matches_overseas_higher": 100,
    "matches_hkjc_higher": 0,
    "p25_diff_pct": 8.28,
    "p75_diff_pct": 9.1,
    "diff_bucket_distribution": {
      "hkjc_higher_(< 0%)": 0,
      "0_to_3%": 0,
      "3_to_5%": 1,
      "5_to_10%": 94,
      "10_to_15%": 5,
      ">_15%": 0
    },
    "case_examples": [
      {
        "date": "2026-04-22",
        "match": "Burnley vs Man City",
        "score": "0-1",
        "max_diff_market": "draw",
        "max_diff_pct": 18.42,
        "overseas_avg_odds": 9.0,
        "hkjc_est_odds": 7.6,
        "match_avg_diff_pct": 14.97
      },
      {
        "date": "2026-05-01",
        "match": "Leeds vs Burnley",
        "score": "3-1",
        "max_diff_market": "away",
        "max_diff_pct": 15.71,
        "overseas_avg_odds": 9.5,
        "hkjc_est_odds": 8.21,
        "match_avg_diff_pct": 10.27
      },
      {
        "date": "2026-04-19",
        "match": "Aston Villa vs Sunderland",
        "score": "4-3",
        "max_diff_market": "away",
        "max_diff_pct": 14.67,
        "overseas_avg_odds": 5.55,
        "hkjc_est_odds": 4.84,
        "match_avg_diff_pct": 10.33
      },
      {
        "date": "2026-03-14",
        "match": "West Ham vs Man City",
        "score": "1-1",
        "max_diff_market": "draw",
        "max_diff_pct": 14.15,
        "overseas_avg_odds": 4.31,
        "hkjc_est_odds": 3.78,
        "match_avg_diff_pct": 9.8
      },
      {
        "date": "2026-04-25",
        "match": "Liverpool vs Crystal Palace",
        "score": "3-1",
        "max_diff_market": "draw",
        "max_diff_pct": 13.9,
        "overseas_avg_odds": 5.0,
        "hkjc_est_odds": 4.39,
        "match_avg_diff_pct": 9.84
      }
    ]
  },
  "citation": "OddsForge HK / 港彩通 (2026). HKJC vs Overseas 2025-26 EPL Odds Dataset. https://hkoddspick.com/dataset/",
  "schema_version": "1.0"
}