Why sack yards matter when evaluating quarterbacks

Passing yards and net offense answer different questions

Official passing yards describe the yards credited on completed passes. They are useful, intuitive, and worth showing directly. But they do not subtract yards lost when a quarterback is sacked. A quarterback can therefore finish with a strong passing-yard total while the offense loses a meaningful amount of field position on dropbacks that end behind the line of scrimmage.

QB Scorecard uses a separate net-yardage concept for QOPI: passing yards plus non-kneel rushing yards, minus sack yards. That is not meant to replace the box score. It is meant to measure how much quarterback-driven yardage survived after the costly negative plays that occur on passing opportunities.

Why sacks belong in an efficiency measure

A sack is not always entirely the quarterback's responsibility. Protection, receiver separation, play design and down-and-distance all matter. The same is true of interceptions, completion percentage and even touchdowns. Public quarterback metrics rarely isolate one player perfectly; the question is whether a result contains useful signal when it is given an appropriate weight.

Ignoring sacks entirely creates the opposite problem. Two quarterbacks can have the same passing yards and attempts while one repeatedly loses yardage on sacks. Treating those performances as identical would overstate the efficiency of the second offense. QOPI therefore includes sack yardage in net production while keeping the sack effect as only one part of a broader score.

Why the Current Week table now shows both

A single game makes the distinction especially noticeable. If a quarterback throws for 327 yards, fans expect to see 327 somewhere on the page. The Current Week board therefore shows official Pass Yds as its own column. Net Y/Opp is shown separately as a QOPI efficiency input.

That separation is intentional: the conventional stat remains easy to recognize, while the model-specific calculation stays visible instead of being hidden behind the final score. If the two numbers tell different stories, that is useful information rather than an error to smooth over.

Net yards are still context, not a verdict

A high net-yardage rate does not automatically mean a quarterback played a complete game, and a low rate does not prove every sack was avoidable. QOPI also considers touchdown creation, first downs, turnover avoidance, contextual accuracy, starter results and clutch situations. The goal is to keep a costly part of quarterback offense in the accounting without pretending it explains everything.