QBSCORECARDNFL QUARTERBACK ANALYTICS • POWERED BY QOPIWhy sack yards matter when evaluating quarterbacks
Passing yards are familiar, but they do not tell you how much offense survived after sacks. QB Scorecard keeps those ideas separate.
Read analysisHow to read a one-game QOPI score
A one-game ranking can be useful without pretending one Sunday settles a quarterback debate.
Read analysisComparing quarterbacks across eras without pretending the eras are equal
A 1970s box score and a modern passing line were created in different football environments. QB Scorecard uses different views to keep that context visible.
Read analysisWhy turnovers, accuracy and opportunity all need context
Quarterback efficiency is not one stat. QOPI combines several signals so one strength cannot completely hide another weakness.
Read analysisPeak versus longevity: how QB Scorecard builds career QOPI
Great careers are not just long, and great peaks are not automatically great careers. The All-Time page tries to preserve both ideas.
Read analysisWhat “clutch” means in QB Scorecard — and what it does not
Late-game performance matters, but a clutch metric can become storytelling very quickly if opportunity is ignored.
Read analysisEDITORIAL APPROACH
Explaining the model is part of the model.
These articles are not generated player blurbs or rewrites of outside rankings. They document QB Scorecard's own choices: what counts as an opportunity, why sack yardage is deducted in net offense, how short samples are treated, and why career value is separated from peak performance. When the metric changes, the explanation should change with it.
For the complete component definitions, historical coverage notes and data sources, use the How It Works page.