Springs benefits from mistakes
KC Joyner reveals his new metric, designed to better measure the overall performance of a cornerback.
The first statistic I started tracking was completion percentage. There are measurements of completion percentages for quarterbacks, and you can even find completion percentages for receivers (which is also something I track), but there has never been an attempt to determine the completion percentage against specific defensive players.
There are many reasons given why this isn't tracked. The most prevalent is that it is difficult to determine who was responsible for the coverage on a certain play. This argument implies that coverage responsibility can't be measured, but this clearly isn't the case.
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