Jaqueline Cristian upset top seed Daria Kasatkina 6-4, 6-0 in Adelaide, while Madison Keys advanced to the quarter-finals.

Daria Kasatkina, competing as an Australian, was defeated 6-4, 6-0 by Romania’s Jaqueline Cristian in the Adelaide International second round, marking Cristian’s first win over Kasatkina and her second straight-set upset of a top seed. Meanwhile, defending Australian Open champion Madison Keys advanced to the quarter-finals with a 6-4, 6-1 win over Czech teenager Tereza Valentova, overcoming early serve issues. Keys will face 18-year-old Victoria Mboko, who reached the quarter-finals by saving two match points against Anna Kalinskaya. Cristian will play Australian Kimerly Birrell, who advanced after Marketa Vondrousova withdrew due to injury.