If anyone was going to challenge the system, it was Naomi Osaka.

Her move has been applauded by athletes in tennis and beyond, as the once shy 23-year-old has again sought to use her platform to prompt discussion and push for change.

Some tennis officials have been less supportive: she faces huge fines – up to $20,000 (£14,160) per news conference – for failing to carry out the media commitments that are in the Grand Slam rule book