I've just been reading this and it is very interesting. Apart from other things it made me ponder, it did bring to mind Cilic's situation by raising the question of what is going on with him. My instinct was to think we know what's going on, he's been suspended. Then I realised we don't actually know yet whether he has or not. Literally nothing has been said about him within the game, which leads a person to conclude that he must have voluntarily stopped playing while the matter is looked in to, or he waits for a hearing.
There are two issues that come to mind. Firstly, it beggars belief to me that a person can choose themselves whether to continue playing or not in the immediate aftermath of failing a test. One would assume a player would have to stop whilst matters are looked in to, but that appears not to be the case.
Secondly, the silence surrounding failed tests doesn't strike me as helpful. Keeping these things quiet must surely raise suspicions rather than removing them. We live in a time where sport, any sport, not just tennis, can not just be clean, it needs to be seen to be clean. Part of that must surely be about transparency, because otherwise it sets up sports to allegations of cover ups.