PPG Model Backtest

← Back to Rankings
2025
All Seasons Accuracy
71.1%
2913 correct of 4095 games
Covers 20 seasons (current + historical).
Historical Accuracy
71.1%
2852 correct of 4011 games
Prior seasons: 19
Current Season Accuracy
72.6%
61 correct of 84 games
Settings
Start week: 4
Retroactive mode: On
Season: 2025
Confidence Buckets (Current + Historical)
Margin Band Games Hit Rate Avg Prob
0 – 5 138 50.7% 55.8%
5 – 10 119 46.2% 64.7%
10 – 20 300 53.0% 77.0%
20+ 3538 74.3% 98.4%
Probability Calibration (Current + Historical)
Predicted Range Games Avg Pred Actual Win %
50–59% 131 55.6% 52.7%
60–69% 136 64.8% 46.3%
70–79% 196 75.0% 54.1%
80–89% 274 85.4% 54.7%
90–100% 3358 99.0% 75.2%
Sample Game Outcomes
Week Matchup Predicted Winner Actual Winner Pred Prob Pred Margin Actual Margin
4 PHI vs TB TB PHI 77.4% -14.77 6
4 LAC vs NYG LAC NYG 55.4% 2.6 -3
4 KC vs BLT KC KC 99.9% 87.18 17
4 ATL vs WAS ATL ATL 83.9% 19.83 7
4 CLV vs DET DET DET 99.2% -57.18 -24
4 CIN vs DEN DEN DEN 99.9% -80.58 -25
4 IND vs LA LA LA 80.2% -16.8 -7
4 MIA vs NYJ NYJ MIA 50.6% -0.28 6
4 NE vs CAR NE NE 99.9% 80.28 29
4 LV vs CHI CHI CHI 88.2% -24.18 -1
4 NO vs BUF BUF BUF 99.8% -73.67 -12
4 ARZ vs SEA SEA SEA 88.0% -23.96 -3
4 PIT vs MIN PIT PIT 94.6% 34.46 3
4 JAX vs SF SF JAX 74.1% -12.59 5
4 TEN vs HST HST HST 100.0% -125.41 -26
Showing up to 15 games. Historical accuracy uses current season strength ratings and does not yet replay week-by-week adjustments.
Historical Backtest Summary (2006–2024)
Season Games Accuracy
2024 224 75.0%
2023 224 64.3%
2022 222 71.2%
2021 223 70.4%
2020 208 72.1%
2019 208 69.7%
2018 208 74.0%
2017 209 74.2%
2016 206 70.4%
2015 208 68.8%
2014 207 72.5%
2013 207 71.0%
2012 207 72.9%
2011 208 72.6%
2010 208 70.7%
2009 208 71.2%
2008 208 68.8%
2007 208 73.1%
2006 210 68.6%
Covers 19 seasons spanning 2006–2024.