Maybe because they only want their logo to be inserted in their own creations, ads ... so they can make the contents themselves and get financial profits.
It's all about money and their logo would only serve a financial project.
I think they won't get extra coverage, as we, fans all already know about them. The ones who use your creations already know them (they must not be named, shush
) and are fan of tennis.
We don't bring them any financial profit with our creations and that may be the main reason in my opinion.