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.

Danielle Collins was unapologetic about her run-in with tennis fans in Australia, but the brash American has joined the chorus of voices arguing that tennis must find ways to entertain new audiences.

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.

Australian Open latest score and updates from Women’s semi-final - Iga Swiatek also aims to reach the final when she takes on Madison Keys in the second semi-final

Defending champion Jannik Sinner raced into the Australian Open semifinals on Wednesday in imperious fashion after Iga Swiatek was equally ruthless to close on a first Melbourne crown.Italian world number one Sinner swept aside an out-classed home hope Alex de Minaur 6-3,

That man was Novak Djokovic, the 10-time Australian Open champion, who got lucky to snare a set. They met only once more last year - the Shanghai final - and Sinner did the legend over again. That is the quality of the player de Minaur was trying to take down.

Madison Keys has shared a sweet story involving Ben Shelton and his father Bryan hyping her up and making her think she was "phenomenal.