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.

World No.1 and defending champion Jannik Sinner, Iga Swiatek, Elina Svitolina, Elena Rybakina and other big players will be in action on Day 9 of the hard court major at the Melbourne Park.

Unseeded Lorenzo Sonego made it two Italians in the quarter-finals when he defeated hobbling 19-year-old American qualifier Tien 6-3 6-2 3-6 6-1, having also taken out Brazilian young gun Joao Fonseca in the second round.

Defending champion Jannik Sinner has moved into the quarterfinals at the Australian Open after beating Holger Rune during a match slowed down by medical timeouts for each player and a delay because the net got knocked loose.

They also have a dead-even head-to-head record. Keys won their first two matches, and Rybakina came back to win the next two, including their only meeting of 2024, on hard courts in Miami. Keys has won eight straight matches in Adelaide and Melbourne, while Rybakina, with new coach Goran Ivanisevic, hasn’t dropped a set this week.

The Day 9 of the Australian Open 2025 is underway at Melbourne Park as it promises to deliver some fantastic and exciting tennis. Jannik Sinner will battle it out against Holger Rune, while Gael Monfils will take on Ben Shelton.

(AP Photo/Vincent Thian) Madison Keys of the U.S. plays a backhand return to Elena Rybakina of Kazakhstan ... (AP Photo/Manish Swarup) Jannik Sinner of Italy reacts during his fourth round match ...

Recommended Videos The No. 1-ranked Sinner occasionally tried to cool ... eliminated 2022 Wimbledon champion Elena Rybakina 6-3, 1-6, 6-3, and now plays Elina Svitolina, a 6-4, 6-1 winner against ...

MELBOURNE, Australia (AP) — First came the medical timeouts, one each for Jannik Sinner and Holger ... eliminated 2022 Wimbledon champion Elena Rybakina 6-3, 1-6, 6-3, and now plays Elina ...

As much as any top player, Sinner has been able to expose De Minaur’s lack of first-strike weaponry. The Aussie’s strength is his scrambling and counterpunching, but Sinner serves too well, hits too hard, places the ball too precisely for his defense to be effective. De Minaur hasn’t found a way to hurt, rattle, of disrupt him.

Australian Open quarterfinals are set. Four more men and women booked their spots in the final eight on Monday, including three seeded