Originally Posted by bluetrain4
I don't doubt that doping happens. In fact, I bet it happens way more than we'd like to imagine. But, other than the players who were actually caught, it's all rank speculation as to who has doped and when, which never leads to any productive discussion.
This. And this is why all the testing and stuff should be increased BIG TIME. However, there's no incentive for the ATP or ITF to test more, because it costs money and catching players will cost them more money.