Originally Posted by veroniquem
If the issue is that it throws the opponent off rhythm, it will do so whether you estimate it's legit or not and it will definitely be worse in the middle of a game. There is no way to evaluate whether breathing issues are more or less legitimate than a bump on the head. It's 100% subjective.
No it's not. Azarenka and Nadal are absolute proven cheats. Azarenka the biggest one of all. She lied about having an injury. It wasn't subjective at all. But then again, those who defend Azarenka demonstrate that they cheat themselves, and they think it's alright.