Just for anyone who was confused as I was...the submitted URL is a sidebar for the massive article markrote links to. That said, I like the submitted URL because it's another example of how bad data (in this case, the database of concussions sloppily put together by the NFL) can be combined with old-fashioned research and reporting (looking up old football game news articles) to find damning evidence.

Or, more broadly speaking, never trust a dataset without corroborating it with your own research.