{
  "title": "2026 Fantasy Football Scoring Format Impact Report",
  "published": "2026-07-28",
  "canonical": "https://leaguefrenzy.com/blog/fantasy-football-scoring-format-impact-report-2026",
  "author": "LeagueFrenzy Research",
  "citation": "LeagueFrenzy, \"2026 Fantasy Football Scoring Format Impact Report,\" July 28, 2026.",
  "attribution": "Aggregate findings may be quoted or charted with attribution and a link to the canonical report.",
  "evidenceTracks": {
    "historicalBacktest": {
      "description": "Eight target-season projection backtests with even-year tuning targets separated from odd-year holdouts.",
      "fixtureSeasons": [2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025],
      "evaluatedTargetSeasons": [2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025],
      "maxHistorySeasons": 3,
      "referenceScoring": "Full PPR plus tackle-heavy IDP",
      "minimumActualGames": 8,
      "targetSeason": 2025,
      "historySeasons": [2022, 2023, 2024],
      "weighted": {
        "offense": { "players": 315, "spearman": 0.771 },
        "idp": { "players": 500, "spearman": 0.618 }
      },
      "positionHighlights": [
        { "position": "RB", "players": 77, "spearman": 0.848, "maePerGame": 2.58 },
        { "position": "WR", "players": 131, "spearman": 0.783, "maePerGame": 2.41 },
        { "position": "TE", "players": 76, "spearman": 0.786, "maePerGame": 2.08 },
        { "position": "LB", "players": 173, "spearman": 0.707, "maePerGame": 2.33 },
        { "position": "QB", "players": 31, "spearman": 0.49, "maePerGame": 3.83 }
      ],
      "targets": [
        {
          "targetSeason": 2018,
          "role": "tune",
          "historySeasons": [2016, 2017],
          "weighted": {
            "offense": { "spearman": 0.646 },
            "idp": { "spearman": 0.548 }
          }
        },
        {
          "targetSeason": 2019,
          "role": "holdout",
          "historySeasons": [2016, 2017, 2018],
          "weighted": {
            "offense": { "spearman": 0.694 },
            "idp": { "spearman": 0.6 }
          }
        },
        {
          "targetSeason": 2020,
          "role": "tune",
          "historySeasons": [2017, 2018, 2019],
          "weighted": {
            "offense": { "spearman": 0.694 },
            "idp": { "spearman": 0.613 }
          }
        },
        {
          "targetSeason": 2021,
          "role": "holdout",
          "historySeasons": [2018, 2019, 2020],
          "weighted": {
            "offense": { "spearman": 0.664 },
            "idp": { "spearman": 0.596 }
          }
        },
        {
          "targetSeason": 2022,
          "role": "tune",
          "historySeasons": [2019, 2020, 2021],
          "weighted": {
            "offense": { "spearman": 0.691 },
            "idp": { "spearman": 0.601 }
          }
        },
        {
          "targetSeason": 2023,
          "role": "holdout",
          "historySeasons": [2020, 2021, 2022],
          "weighted": {
            "offense": { "spearman": 0.689 },
            "idp": { "spearman": 0.585 }
          }
        },
        {
          "targetSeason": 2024,
          "role": "tune",
          "historySeasons": [2021, 2022, 2023],
          "weighted": {
            "offense": { "spearman": 0.719 },
            "idp": { "spearman": 0.571 }
          }
        },
        {
          "targetSeason": 2025,
          "role": "holdout",
          "historySeasons": [2022, 2023, 2024],
          "weighted": {
            "offense": { "players": 315, "spearman": 0.771 },
            "idp": { "players": 500, "spearman": 0.618 }
          }
        }
      ],
      "means": {
        "tune": {
          "targetSeasons": [2018, 2020, 2022, 2024],
          "offenseSpearman": 0.687,
          "idpSpearman": 0.583
        },
        "holdout": {
          "targetSeasons": [2019, 2021, 2023, 2025],
          "offenseSpearman": 0.705,
          "idpSpearman": 0.6
        }
      },
      "latestHoldout": {
        "targetSeason": 2025,
        "historySeasons": [2022, 2023, 2024],
        "weighted": {
          "offense": { "players": 315, "spearman": 0.771 },
          "idp": { "players": 500, "spearman": 0.618 }
        },
        "positionHighlights": [
          { "position": "RB", "players": 77, "spearman": 0.848, "maePerGame": 2.58 },
          { "position": "WR", "players": 131, "spearman": 0.783, "maePerGame": 2.41 },
          { "position": "TE", "players": 76, "spearman": 0.786, "maePerGame": 2.08 },
          { "position": "LB", "players": 173, "spearman": 0.707, "maePerGame": 2.33 },
          { "position": "QB", "players": 31, "spearman": 0.49, "maePerGame": 3.83 }
        ]
      },
      "protocolNote": "Shipped model defaults were not retuned against the widened 2016-2025 fixture set.",
      "limitations": [
        "Pure rookies and other players without usable prior history are not represented like veterans.",
        "Results use one reference scoring configuration; other scoring changes the fantasy-points target."
      ],
      "source": "https://leaguefrenzy.com/blog/how-accurate-were-our-projections"
    },
    "syntheticFixedPool": {
      "description": "Controlled value-engine experiments over a handcrafted fixed player pool with synthetic identities.",
      "engineVersion": "1.11.0",
      "pool": "golden idp-dynasty fixture",
      "horizon": "REDRAFT",
      "marketWeight": 0.0,
      "notProductionRankings": true,
      "studies": {
        "superflex": {
          "qbCount": 22,
          "qbsWithImprovedRank": 22,
          "meanRankGain": 107.09,
          "meanVorpGain": 257.5,
          "projectedPointsChanged": false,
          "source": "https://leaguefrenzy.com/blog/superflex-qb-premium-quantified"
        },
        "tackleValue": {
          "assistValueAsShareOfSolo": 0.5,
          "crossovers": [
            {
              "archetype": "high-tackle",
              "firstSoloPointsOutscoringWr1": 2.5,
              "firstSoloPointsOutrankingWr1": 4.0
            },
            {
              "archetype": "balanced",
              "firstSoloPointsOutscoringWr1": 3.0,
              "firstSoloPointsOutrankingWr1": null
            },
            {
              "archetype": "sack-heavy",
              "firstSoloPointsOutscoringWr1": 4.0,
              "firstSoloPointsOutrankingWr1": null
            }
          ],
          "source": "https://leaguefrenzy.com/blog/tackle-value-lb-vs-wr1"
        },
        "formatVariance": {
          "formats": ["standard-half-ppr", "full-ppr", "te-premium", "idp-heavy"],
          "largestObservedRankSpan": 52,
          "source": "https://leaguefrenzy.com/blog/players-value-swings-scoring-formats"
        }
      },
      "limitations": [
        "The player identities and archetypes are synthetic.",
        "Results explain controlled scoring and roster effects, not current NFL player recommendations."
      ]
    }
  }
}