His departure sets up a Sunday men’s final between the second-seeded Zverev and the tournament’s No. 1 seed and defending champ, Jannik Sinner, who prevailed over the American

Jannik Sinner is through to the Australian Open quarterfinals after a drama-filled fourth-round win over Holger Rune. World No. 1 Sinner won in four sets, 6-3. 3-6, 6-3, 6-2, but this did not tell the story of a contest defined by illness.

First came the medical timeouts, one each for Jannik Sinner and Holger Rune with the temperature above 90 degrees Fahrenheit (32 Celsius) at the Australian Open. Then came the bizarre sight of a 20-minute delay because the net at Rod Laver Arena detached from the court after being hit by a big Sinner serve.

Ben Shelton has reached his first Australian Open semifinal by defeating Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 in an entertaining match.

Defending champion Jannik Sinner has defeated 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open

In the quarterfinals, Sinner will face No. 8 Alex de Minaur of Australia, who ousted American Alex Michelsen 6-0, 7-6 (5), 6-3. It will be the first quarterfinals appearance for de Minaur in his home country's Grand Slam, and he became just the third Aussie man to reach the round in 20 years.

Defending champion Jannik Sinner has overcome some third-set cramping to beat Ben Shelton 7-6 (2), 6-2, 6-2 to return to the Australian Open final as he pursues a third Grand Slam title.

The World No. 1, despite feeling unwell in sweltering conditions, kept up his title defense with a four-set triumph.

The Italian saved two set points at 6-5 and will play for the title against Zverev. The men's final of the Australian Open will pit the two best tennis players on the planet against each other: Jannik Sinner (1) against Alexander Zverev (2).

Swiatek will face No. 19 Madison Keys of the U.S. on Thursday night for a berth in the final. The other women’s semifinal is No. 1 Aryna Sabalenka, the two-time defending champion, against her good friend, No. 11 Paula Badosa.

Australia’s biggest hope, Alex de Minaur, reached the Australian Open quarterfinals for the first time in his career, becoming the first Australian male to do so since Nick Kyrgios in 2015.