How do you forge the mental toughness to become insanely excellent at tennis while also claiming that pressers in the contract hurt your feelings so badly as to risk mental illness if you happened to have lost that day?

Are the players entering the sport getting more and more easily-offended and milquetoasty?

Even if the other side is Evil Corp., if a contract you signed says you have to do something and you don't do it, that's shirking professional responsibility and non-performance. Contracts are contracts. Don't like it, don't sign it, negotiate it, and then sign it.. or your word and signature are meaningless.