article_snippet: and it may be hard to prove the CTE was triggered by injuries suffered while playing for Pop Warner.
article_snippet: We have to prove that Pop Warner Pop Warner was a substantial factor in Johnson getting Pop Warner [CTE], and We knew from research that playing under 12 is when you're most vulnerable," Johnson told media when Johnson filed the suit.
article_snippet: Jon Butler, executive director of Pop Warner Little Scholars Inc., told me on Thursday via email:  
article_snippet: Pop Warner Pop Warner has been, and will continue to be, at the forefront of addressing player safety. ...