Coco Gauff called for more privacy for players after she was captured smashing a racquet following a devastating defeat by Elina Svitolina in the Australian Open quarter-finals.
A despondent Gauff, 21, served five double faults, made 26 unforced errors and hit just three winners in a 6-1 6-2 loss that took just 59 minutes.
The American did not smash the racquet on court but was filmed by the tournament's behind-the-scenes coverage in the players' area, with the footage broadcast on TV and social media.
Gauff said she had made a conscious effort to suppress her emotions until she was away from public view.