Rafael Nadal continued his relentless march towards an 18th major title Tuesday as an emotional Petra Kvitova swept into her first Grand Slam semi-final since a terrifying knife attack almost ended her career.

Rafa Nadal kept the flag flying for the old guard at the Australian Open with a 6-3 6-4 6-2 win over American Frances Tiafoe on Tuesday for a place in the semi-final, where he will meet another next generation player in Stefanos Tsitsipas.

Danielle Collins overcame a slow start to book a maiden Grand Slam semi-final spot at the AustralianOpen when the unheralded American rallied from a set down to overcome Russia's Anastasia Pavlyuchenkova 2-6 7-5 6-1 on Tuesday.

A fired-up Serena Williams slugged past world number one Simona Halep Monday as she inches ever closer to a 24th Grand Slam title, while Novak Djokovic survived a battle to stay on course for a record seventh Australian Open crown.

Novak Djokovic struck back for the old guard at the Australian Open on Monday, soaking up the pressure from a willing Daniil Medvedev before crushing the young Russian 6-4 6-7(5) 6-2 6-3 to reach his 10th quarter-final at Melbourne Park.

Serena Williams staved off a spectacular fightback from world number one Simona Halep to win 6-1 4-6 6-4 and reach the quarter-finals of the Australian Open on Monday.

Having toppled 20-times Grand Slam champion Roger Federer in the fourth round of the Australian Open on Sunday, an overwhelmed Stefanos Tsitsipas felt thrilled to have turned his idol into a "rival".

Defending champion Roger Federer was stunned by fiery Greek Stefanos Tsitsipas who ended his bid for a record seventh Australian Open Sunday on a day of upsets that also saw second seed Angelique Kerber crash out.

Rafa Nadal routed Tomas Berdych 6-0 6-1 7-6(4) in a centre court masterclass to charge into the quarter-finals of the Australian Open on Sunday.

World number one Simona Halep set up a headline last 16 showdown with Serena Williams by beating her sister Venus Saturday as

Serena Williams powered into the fourth round of the Australian Open on Saturday with a 6-2 6-1 demolition of Dayana Yastremska then consoled the Ukrainian teenager after leaving her in tears.

Maria Sharapova stunned defending champion Caroline Wozniacki to sweep into the Australian Open last 16 Friday and join ice men Rafael Nadal and Roger Federer, who clinically disposed of their opponents.

Maria Sharapova craves tough fights against top players, something she has been denied in the recent years after her ranking plummeted due to doping and injury problems, the former world number one said on Friday.

Roger Federer celebrated his 100th match at the Australian Open on Friday by giving young American Taylor Fritz a centre court schooling to reach the last 16.

Serena Williams stepped up her drive for a record-equalling 24th Grand Slam Thursday by swatting aside Eugenie Bouchard, as world number one Novak Djokovic won an emotional 2008 Australian Open final rematch with Jo-Wilfried Tsonga.

The headline says 'Big 3' instead of 'Big 4' in order to avert argument. Andy Murray's place alongside three of the greatest tennis players of all time -- Roger Federer,

World number one Novak Djokovic blasted past Jo-Wilfried Tsonga 6-3, 7-5, 6-4 at the Australian Open on Thursday in a repeat of their 2008 Melbourne final, also won by the Serb.

Lleyton Hewitt accused Bernard Tomic of blackmail and physical threats against him and his family in explosive allegations Thursday as Australian tennis plunged to new lows.

Seven-time Grand Slam champion Venus Williams made a late charge into the Australian Open third round Thursday, grinding out a win in her second three-set victory of the tournament.

Milos Raonic served his way into the third round of the Australian Open on Thursday with a pulsating 6-7(4) 7-6(6) 7-6(11) 7-6(5) victory against former champion Stan Wawrinka.