sooo, the way I read it the courts at 2021 AO are _not_ per ITF regulations.


Hall of Fame
Here are 2021 ITF regulations:
section 1 The Court:
No advertising is allowed on the court, net, strap, band, net posts or singles sticks except as provided in Appendix IV.
and Appendix IV:
[paragraphs 1, 2, and 3 talk about what kind of advertising is allowed. And then Paragraph 4 reads:
Notwithstanding paragraphs (1), (2) and (3) above, any advertising, marks or material placed on the net or placed at the back and sides of the court, or on the court surface outside the lines may not contain white or yellow or other light colors that may interfere with the vision of the players or the playing conditions.
well, this looks like a white advertising on the net to me......