O nly 23 years old, World No. 1 men's tennis player Jannik Sinner will face No. 2 Alexander Zverev in Sunday's final. A win would give Sinner a similarly impressive five-major run

But there have been signs of the tension and pressure that Sinner is feeling, with the Italian battling illness in a gruelling fourth-round win over Holger Rune and then cramping in the semi-finals against Ben Shelton on Friday despite winning in straight sets.

Defending champion Jannik Sinner overcame an early test against American Ben Shelton to reach his second straight Australian Open final, winning 7-6 (2), 6-2, 6-2.

An American woman is a champion once again. After having to face the two best players in the world -- Iga Switaek and Aryna Sabalenka -- Madison Keys has claimed her first Grand Slam title at the Australian Open. Keys outlasted Sabalenka in the final on Saturday over three sets to accomplish the feat.

The men’s final is scheduled to start at 3:30 a.m. EST and will be broadcast on ESPN and ESPN Deportes. Fans looking to watch can do so for free through FuboTV, which offers a free trial and $30 off your first month, or DirecTV Stream, which offers a free trial. SlingTV doesn’t offer a free trial but does have other promotional offers available.

Defending champion Jannik Sinner will face Alexander Zverev in the Australian Open men's final on Sunday. Sinner is seeking his third Grand Slam title overall.

Jannik Sinner is seeking to defend his Australian Open title on Sunday and win his third Grand Slam title when he takes on Alexander Zverev in the final.

MELBOURNE, Australia — It’s not often that a man is able to follow up his first Grand Slam title by repeating as the champion at the same tournament a year later, which is what Jannik Sinner will be trying to do Sunday when he faces Alexander Zverev in the Australian Open final.

The win sets up a showdown with Alexander Zverev of Germany in Sunday’s final. Earlier Friday, Zverev won the first set of his semifinal when Novak Djokovic missed a putaway volley in a tiebreak. Djokovic retired on the spot, unable to overcome the muscle tear he suffered in his quarterfinal win over Carlos Alcaraz Tuesday night.

World no.1 Jannik Sinner will be aiming to defend his Australian Open title while World no.2 Alexander Zverev is eyeing his maiden Grand Slam. The match starts at 2 PM IST.

It's men's final day at the Australian Open. Can world No. 1 Jannik Sinner go back-to-back, or will Alexander Zverev break through for a maiden Grand Slam title. Follow the action in our live blog here.