Since returning to action a year ago, Osaka has shown signs of getting her game back together, including a memorable and narrow loss to then-No. 1 Iga Swiatek at the French Open.

At her peak, the four-time Grand Slam champion played her best tennis in the toughest moments. In Melbourne, she did it again.

Naomi Osaka said she was enjoying a little bit of revenge against Karolina Muchova at the Australian Open on Wednesday, recalling how the Czech had ended her U.S. Open campaign last year when she was sporting her "best outfit ever".