The irony being, of course, that they could easily have treated Osaka as one of their own. She has American (and Japanese) citizenship and has lived there since she was 3.
When she's winning regularly, you can bet they'll tell you she's American.
Called the ref a thief after already having 2 code violations, including a coaching violation. Cost her a crucial game and she lost in straight sets to Naomi Osaka, who wins her first Grand Slam. Crazy scenes and unfair that her big win was marred by such melodramatics.