The No. 6 seed missed multiple break points to seize the advantage in the third set and Keys profited to move into the quarterfinals.

No. 19 seed Madison Keys scored the big upset on Day 9 of the Australian Open, defeating No. 6 Elena Rybakina 6-3, 1-6, 6-3 at Margaret Court Arena to advance to the tournament quarterfinals.

In the Australian Open Round of 16 on Sunday, No. 7-ranked Elena Rybakina takes on No. 14 Madison Keys.Rybakina secured a two-set victory over Dayana Yastremska (6-3, 6-4) in the Round of 32 in

Elena Rybakina, the sixth seed at Melbourne Park, had looked in fine form in the early rounds, but came into Monday's clash with Madison Keys at Margaret Court Arena carrying a back issue

American Madison Keys defeated sixth seed Elena Rybakina in a thrilling match at the Australian Open, advancing to the quarter-finals. Despite a strong start and a challenging second set, Keys regained momentum to secure her third victory over a top-10 player this month.

She will next play Ukraine's Elina Svitolina, who beat Veronika Kudermetova 6-4, 6-1 earlier on Jan 20. Read more at straitstimes.com.

In the quarterfinals at the Australian Open on Tuesday, Madison Keys (ranked No. 14) meets Elina Svitolina (No. 27).Keys enters the quarterfinals after her three-set victory on Sunday over Elena

Elina Svitolina rallied from 4-1 down defeat Veronika Kudermetova 6-4, 6-1 to reach the Australian Open quarterfinals. Svitolina will face Madison Keys in the next round.