American Danielle Collins is out of the Australian Open following a straight-sets defeat by fellow countrywoman Madison Keys.

Defending champ Jannik Sinner drops set for first time since October, but rallies for win; American Danielle Collins plays villain while advancing.

Danielle Collins keeps perspective after falling to fellow American Madison Keys in the third round of the Australian Open

By Nick Mulvenney MELBOURNE (Reuters) -Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca's first Grand Slam campaign came to an end in the second round.

Defending champion Jannik Sinner raced to victory at the Australian Open to sweep into the last 16 as Iga Swiatek demolished Emma Raducanu. Also into the second week is 38-year-old Gael Monfils after he stunned fourth seed Taylor Fritz – with the veteran’s wife Elina Svitolina also enjoying a shock win immediately afterward on the same court.

Defending men’s champion Jannik Sinner, Carlos Alcaraz and Novak Djokovic all play, with Nick Kyrgios leading Australian hopes. They are joined by Iga Swiatek, Coco Gauff, Ons Jabeur, Danielle Collins and Naomi Osaka on a star-studded day’s play. Here’s what to watch on the three biggest show courts and around the grounds.

The Australian Open delivered intense action as Jannik Sinner overcame an early setback to advance, while Danielle Collins engaged with fans after a thrilling victory. Major champions Swiatek, Raducanu,

The third round of the Australian Open continues on Saturday with second seed Iga Swiatek looking to maintain her perfect record against Emma Raducanu in a battle of former U.S. Open champions.

MELBOURNE: Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca’s first Grand Slam campaign came to an end in the second round.

Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca's first Grand Slam campaign came to an end in the second round.

The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed Daniil Medvedev in a five-set classic, 6-3, 7-6, 6-7, 1-6, 7-6, that ended at 2:54 a.m. local time. Medvedev had reached three of the past four Australian Open finals, but could not fend off a ferocious Tien.