Once again, the question of the NFL's pre-eminence — even existence — has been raised with the retirement of Chris Borland, a very good player, who has walked away from the game and millions of dollars at the age of 24 in order to preserve his health, or more specifically, his brain.
As always in these well-publicized anti-football cases, observers pop up to note that the other mainstream sport identified with brain damage — boxing — has dramatically declined in popularity,
