Name the last NBA player that shot himself in the heart like Dave Duerson or plunged their SUV off a cliff like Junior Seau. Both actions related to CTE.
Mr Google if you want to go random player tragedies - I could flood you with NFL and a few college stories. Best left alone don't you think?
Last I checked, the NFL was alone in admitting a CTE link to their league.
"Name one!"
"OK, here you go."
"Oh, sure, with Google!"
Seriously, with concussions affecting other youth sports at a higher rate than football, and the number of traumatic injuries necessary to cause CTE unknown, there is a lot more work that needs to be done in this regard. I'm fairly certain girls' soccer has a higher concussion rate than does football.