We have no evidence players are doping.
We do have evidence that the doping controls are a big joke, we do have evidence that it's very easy to dope. We do have evidence that the ITF is keeping information away from us that might seem damaging - like the list of the out of competition tests that was online at one point but later removed. I saw it, others here saw it too. Most top players had missed tests. The evidence is out there, but it's been taken offline so we can't post a link to show it to you.
So the likelihood that doping is happening is quite high.
tribalfusion seems to be confused.
Doping control in tennis is even LIGHT YEARS BEHIND doping control in cycling even 10 years ago.