Down 5-0 in the first set, the former No. 1 player beats Karolina Muchova in three sets to make a Grand Slam third round for the first time in three years

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

In the Australian Open Round of 64 on Tuesday, we have a matchup featuring No. 51-ranked Naomi Osaka versus No. 20 Karolina Muchova.Muchova’s last competition was a win, 6-1, 6-3, over