Chart 2 of 16
Share of fourth-down mistakes that were over-aggression
50% would mean a coach was equally likely to err bold as timid.
201551.6%
201657.6%
201754.9%
201855.8%
201956.8%
202060.9%
202163.3%
202265.4%
202364.8%
202464.0%
202567.0%
+1.60 percentage points a year. ~2,600 graded mistakes per season, full corpus.
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