Well try to refute that one,

I am not saying current basketball analyst Jay Williams is 100% correct.
However as good and easy as GS Warriors is ruling the NBA thus running it,
It may imply why perhaps only Warriors and Spurs? Are excluded from 80%
And rest of NBA teams not named Warriors if Spur, have all noted media problems
From elite like Clippers, Okc, ... and whomever are playoff teams or not.
Guess NBA used to lead in sports testing players,
Just cause weed or similar used for medical issues treatments,
Rule are rules.
Why ? would J.Will cite this if he had no proof.
The league is still good but maybe there are problems which commiss,Silver
Has yet to investigate. Worse than our knickerbockers problems we've seen.
http://www.foxbusiness.com/features/2016/03/16/fmr-nba-player-jay-williams-80-players-use-marijuana.html