Jon Wertheim dispenses some wisdom:
"....I feel a bit about Troicki the way I feel about Marin Cilic. The circumstances were murky -- aren’t they always? -- but in a world of strict liability, the athlete is on the hook for a positive result. (Or, in this case, declining to submit to testing.) Troicki did the time, a penalty that may end up amounting 10 percent of his career. (Comparing this to other sports for a first offense, it certainly ends up on the harsh side.) Though he did not retain his ranking, the player was allowed to re-enter tennis and, in essence, earn his job back. And Troicki, now 28, has done just that, playing himself back into form in short order.This is tennis.
"This was an intensely unpleasant and regrettable situation..."