U.S. Open runner-up Karolina Pliskova rallied from 5-1 down in the third set to beat Jelena Ostapenko 4-6, 6-0, 10-8 and reach the fourth round of the Australian Open for the first time. She saved a match point before holding in the 12th game, prolonging the match for another six games until fifth-seeded Pliskova finally broke serve again.