The tennis ace showed off her sleek jet black extensions that cascaded down to her back.
"For me, right now I have this feeling of sadness," said Osaka.
Serena Williams said she did not know her coach was giving her instructions and had "never cheated in her life" after her hopes of winning a 24th Grand Slam title ended in extraordinary scenes at the US Open on Saturday.
'Ms Williams has had multiple on-court implosions in the past and got penalised for them, too.' 'She cried sexism this time perhaps because she knew the atmosphere was ripe for it,' notes Shuma Raha.
Coco Gauff claimed the biggest win of her young career on Friday with a stunning upset of defending champion Naomi Osaka at the Australian Open to reach the fourth round. Caroline Wozniacki and Serena Williams also lost their respective matches earlier in the day. Images from Day 5 of the Australian Open played at Melbourne Park on Friday.