{
  "date": "2026-09-23",
  "generated_at": "2026-09-23T23:44:54.627693",
  "artifact_type": "home_run_high_upside_board",
  "description": "Separate high-upside HR board built from the tail-risk layer. It is not a replacement for the core HR board and is not simply highest raw HR probability.",
  "scoring": {
    "formula": "100 * (0.40*uplift_component + 0.30*base_component + 0.20*odds_component + 0.10*active_component)",
    "base_component": "clamp((prob_1_plus_hr - 0.10) / 0.10, 0, 1)",
    "uplift_component": "clamp(tail_uplift / 0.004, 0, 1)",
    "odds_component": "prefers roughly +180 to +450 HR odds with a fade above that",
    "active_component": "1.0 only when tail_layer_active_flag == 1"
  },
  "guardrails": {
    "main_board": {
      "requires_tail_layer_active": true,
      "minimum_base_probability": 0.1,
      "minimum_tail_uplift": 0.0015,
      "minimum_over_odds_if_available": 160
    },
    "watchlist": {
      "minimum_base_probability": 0.075,
      "minimum_tail_uplift": 0.0005,
      "allows_longer_odds_alternatives": true
    }
  },
  "diagnostics": {
    "projection_count": 144,
    "odds_matched_count": 74,
    "tail_active_count": 0,
    "tail_active_rate": 0.0,
    "strict_pool_count": 0,
    "watch_pool_count": 17,
    "fallback_used": true
  },
  "main_board": [],
  "extended_watchlist": [
    {
      "date": "2026-09-23",
      "player_name": "Gunnar Henderson",
      "hitter_name": "Gunnar Henderson",
      "hitter_id": 683002,
      "team": "BAL",
      "team_abbr": "BAL",
      "opponent": "TOR",
      "opponent_abbr": "TOR",
      "game_id": 824785,
      "lineup_slot": 1,
      "sportsbook": "FanDuel",
      "hr_odds": 455,
      "over_odds": 455,
      "prob_1_plus_hr": 0.1952,
      "expected_home_runs": 0.2171,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1953,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 49.16,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside"
    },
    {
      "date": "2026-09-23",
      "player_name": "Ronald Acu\u00f1a Jr.",
      "hitter_name": "Ronald Acu\u00f1a Jr.",
      "hitter_id": 660670,
      "team": "ATL",
      "team_abbr": "ATL",
      "opponent": "CIN",
      "opponent_abbr": "CIN",
      "game_id": 824868,
      "lineup_slot": 1,
      "sportsbook": "FanDuel",
      "hr_odds": 410,
      "over_odds": 410,
      "prob_1_plus_hr": 0.1745,
      "expected_home_runs": 0.1918,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1747,
      "tail_uplift": 0.0002,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 44.35,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside"
    },
    {
      "date": "2026-09-23",
      "player_name": "Mookie Betts",
      "hitter_name": "Mookie Betts",
      "hitter_id": 605141,
      "team": "LAD",
      "team_abbr": "LAD",
      "opponent": "SD",
      "opponent_abbr": "SD",
      "game_id": 823894,
      "lineup_slot": 5,
      "sportsbook": "FanDuel",
      "hr_odds": 505,
      "over_odds": 505,
      "prob_1_plus_hr": 0.1862,
      "expected_home_runs": 0.206,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1863,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 42.46,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside; Lower-lineup upside profile"
    },
    {
      "date": "2026-09-23",
      "player_name": "Ian Happ",
      "hitter_name": "Ian Happ",
      "hitter_id": 664023,
      "team": "CHC",
      "team_abbr": "CHC",
      "opponent": "MIA",
      "opponent_abbr": "MIA",
      "game_id": 824625,
      "lineup_slot": 4,
      "sportsbook": "FanDuel",
      "hr_odds": 550,
      "over_odds": 550,
      "prob_1_plus_hr": 0.1893,
      "expected_home_runs": 0.2099,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1895,
      "tail_uplift": 0.0002,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 41.79,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside"
    },
    {
      "date": "2026-09-23",
      "player_name": "Manny Machado",
      "hitter_name": "Manny Machado",
      "hitter_id": 592518,
      "team": "SD",
      "team_abbr": "SD",
      "opponent": "LAD",
      "opponent_abbr": "LAD",
      "game_id": 823894,
      "lineup_slot": 2,
      "sportsbook": "FanDuel",
      "hr_odds": 435,
      "over_odds": 435,
      "prob_1_plus_hr": 0.1691,
      "expected_home_runs": 0.1852,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1692,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 41.73,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside"
    },
    {
      "date": "2026-09-23",
      "player_name": "Freddie Freeman",
      "hitter_name": "Freddie Freeman",
      "hitter_id": 518692,
      "team": "LAD",
      "team_abbr": "LAD",
      "opponent": "SD",
      "opponent_abbr": "SD",
      "game_id": 823894,
      "lineup_slot": 2,
      "sportsbook": "FanDuel",
      "hr_odds": 515,
      "over_odds": 515,
      "prob_1_plus_hr": 0.1829,
      "expected_home_runs": 0.202,
      "tail_adjusted_prob_1_plus_hr_v3": 0.183,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 40.67,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside"
    },
    {
      "date": "2026-09-23",
      "player_name": "Logan O'Hoppe",
      "hitter_name": "Logan O'Hoppe",
      "hitter_id": 681351,
      "team": "LAA",
      "team_abbr": "LAA",
      "opponent": "ATH",
      "opponent_abbr": "ATH",
      "game_id": 824951,
      "lineup_slot": 5,
      "sportsbook": "FanDuel",
      "hr_odds": 510,
      "over_odds": 510,
      "prob_1_plus_hr": 0.1767,
      "expected_home_runs": 0.1944,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1768,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 39.21,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside; Lower-lineup upside profile"
    },
    {
      "date": "2026-09-23",
      "player_name": "Ozzie Albies",
      "hitter_name": "Ozzie Albies",
      "hitter_id": 645277,
      "team": "ATL",
      "team_abbr": "ATL",
      "opponent": "CIN",
      "opponent_abbr": "CIN",
      "game_id": 824868,
      "lineup_slot": 5,
      "sportsbook": "DraftKings",
      "hr_odds": 615,
      "over_odds": 615,
      "prob_1_plus_hr": 0.1702,
      "expected_home_runs": 0.1866,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1704,
      "tail_uplift": 0.0002,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 36.06,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside; Lower-lineup upside profile"
    },
    {
      "date": "2026-09-23",
      "player_name": "Yo\u00e1n Moncada",
      "hitter_name": "Yo\u00e1n Moncada",
      "hitter_id": 660162,
      "team": "LAA",
      "team_abbr": "LAA",
      "opponent": "ATH",
      "opponent_abbr": "ATH",
      "game_id": 824951,
      "lineup_slot": 6,
      "sportsbook": "FanDuel",
      "hr_odds": 655,
      "over_odds": 655,
      "prob_1_plus_hr": 0.1716,
      "expected_home_runs": 0.1883,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1717,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 35.48,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside; Lower-lineup upside profile"
    },
    {
      "date": "2026-09-23",
      "player_name": "Edouard Julien",
      "hitter_name": "Edouard Julien",
      "hitter_id": 666397,
      "team": "COL",
      "team_abbr": "COL",
      "opponent": "AZ",
      "opponent_abbr": "AZ",
      "game_id": 824301,
      "lineup_slot": 6,
      "sportsbook": "DraftKings",
      "hr_odds": 790,
      "over_odds": 790,
      "prob_1_plus_hr": 0.169,
      "expected_home_runs": 0.1851,
      "tail_adjusted_prob_1_plus_hr_v3": 0.1691,
      "tail_uplift": 0.0001,
      "tail_multiplier": 1.0,
      "framing_component": 1.0,
      "tail_layer_active_flag": 0,
      "game_cluster_flag": 0,
      "high_upside_score": 34.7,
      "board_tier": "",
      "reason_for_inclusion": "Playable base HR rate; Long odds with asymmetric upside; Lower-lineup upside profile"
    }
  ],
  "site_preview": {
    "main_board": [],
    "watchlist": [
      {
        "player_name": "Gunnar Henderson",
        "team": "BAL",
        "opponent": "TOR",
        "lineup_slot": 1,
        "hr_odds": 455,
        "prob_1_plus_hr": 0.1952,
        "tail_uplift": 0.0001,
        "high_upside_score": 49.16
      },
      {
        "player_name": "Ronald Acu\u00f1a Jr.",
        "team": "ATL",
        "opponent": "CIN",
        "lineup_slot": 1,
        "hr_odds": 410,
        "prob_1_plus_hr": 0.1745,
        "tail_uplift": 0.0002,
        "high_upside_score": 44.35
      },
      {
        "player_name": "Mookie Betts",
        "team": "LAD",
        "opponent": "SD",
        "lineup_slot": 5,
        "hr_odds": 505,
        "prob_1_plus_hr": 0.1862,
        "tail_uplift": 0.0001,
        "high_upside_score": 42.46
      },
      {
        "player_name": "Ian Happ",
        "team": "CHC",
        "opponent": "MIA",
        "lineup_slot": 4,
        "hr_odds": 550,
        "prob_1_plus_hr": 0.1893,
        "tail_uplift": 0.0002,
        "high_upside_score": 41.79
      },
      {
        "player_name": "Manny Machado",
        "team": "SD",
        "opponent": "LAD",
        "lineup_slot": 2,
        "hr_odds": 435,
        "prob_1_plus_hr": 0.1691,
        "tail_uplift": 0.0001,
        "high_upside_score": 41.73
      },
      {
        "player_name": "Freddie Freeman",
        "team": "LAD",
        "opponent": "SD",
        "lineup_slot": 2,
        "hr_odds": 515,
        "prob_1_plus_hr": 0.1829,
        "tail_uplift": 0.0001,
        "high_upside_score": 40.67
      },
      {
        "player_name": "Logan O'Hoppe",
        "team": "LAA",
        "opponent": "ATH",
        "lineup_slot": 5,
        "hr_odds": 510,
        "prob_1_plus_hr": 0.1767,
        "tail_uplift": 0.0001,
        "high_upside_score": 39.21
      },
      {
        "player_name": "Ozzie Albies",
        "team": "ATL",
        "opponent": "CIN",
        "lineup_slot": 5,
        "hr_odds": 615,
        "prob_1_plus_hr": 0.1702,
        "tail_uplift": 0.0002,
        "high_upside_score": 36.06
      },
      {
        "player_name": "Yo\u00e1n Moncada",
        "team": "LAA",
        "opponent": "ATH",
        "lineup_slot": 6,
        "hr_odds": 655,
        "prob_1_plus_hr": 0.1716,
        "tail_uplift": 0.0001,
        "high_upside_score": 35.48
      },
      {
        "player_name": "Edouard Julien",
        "team": "COL",
        "opponent": "AZ",
        "lineup_slot": 6,
        "hr_odds": 790,
        "prob_1_plus_hr": 0.169,
        "tail_uplift": 0.0001,
        "high_upside_score": 34.7
      }
    ]
  }
}