Daria Kasatkina shocked Caroline Wozniacki to knock the Australian Open champion out of the St Petersburg Ladies' Trophy.

Caroline Wozniacki won her first grand slam title at the 43rd attempt with an emotional victory over Simona Halep at the Australian Open.

Defending champion Roger Federer was given a simple passage through to his 30th grand slam final when Chung Hyeon unexpectedly retired in the second set of their semi-final at the Australian Open.

Simona Halep and Caroline Wozniacki will do battle in the Australian Open final on Saturday with a first grand slam title and the world number one ranking at stake.

Federer is happy to see players make their breakthroughs at the Australian Open to bring fresh blood to the sport.

The pre-prepared monologue followed his Australian Open quarter-final defeat.

Simona Halep won nine games in a row to breeze past Karolina Pliskova and set up a mouthwatering Australian Open semi-final against former champion Angelique Kerber.

Caroline Wozniacki is two matches away from a first grand slam title after defeating Carla Suarez Navarro 6-0 6-7 (3/7) 6-2 in the quarter-finals of the Australian Open.

Rafael Nadal called for the tennis authorities to think about players’ long-term health after retiring from his quarter-final against Marin Cilic at the Australian Open because of a leg injury.

Top seed Rafael Nadal has retired hurt in his Australian Open quarter-final against Marin Cilic, who led 2-0 in the deciding set.

Novak Djokovic must go back to the drawing board after suffering a recurrence of his elbow problems in a fourth-round loss to Chung Hyeon at the Australian Open.

Novak Djokovic suffered a recurrence of his elbow problems and was beaten in the fourth round of the Australian Open by an inspired Chung Hyeon.

Title favourite Angelique Kerber withstood the unique challenge of Hsieh Su-wei to move into the Australian Open quarter-finals.

Roger Federer maintained his record of not having dropped a set at the Australian Open with a straightforward victory over Marton Fucsovics to reach the quarter-finals.

Sharapova wanted to test her level against the leading players but found the answer a rather brutal one.

Roger Federer fought off the challenge of Jan-Lennard Struff to move into the third round of the Australian Open.

Novak Djokovic believes players were asked to push their physical limits at the Australian Open on Thursday after opponent Gael Monfils complained of suffering heat-stroke.

The Australian Open commenced this week. In advance of the first morning session, Tennis Australia held a workshop on match-fixing at which Jack Anderson presented and got an insight into the efforts taken by a major sporting organisation to protect the integrity of a global sporting event against gambling scams.

Caroline Wozniacki credited her competitive family for the fighting spirit that helped her recover from a seemingly impossible position against Jana Fett in the second round of the Australian Open.

A pep talk from Roger Federer helped inspire Belinda Bencic to a major upset on the opening day of the Australian Open.

Australian Open tournament director Craig Tiley defended the decision to invite Maria Sharapova to the draw ceremony.

Serena Williams has withdrawn from the season-opening Grand Slam in Melbourne and will not defend the title she won in 2017.

Novak Djokovic's Australian Open participation is in doubt after he was forced to withdraw from an exhibition event in Abu Dhabi with an elbow injury.

Rafael Nadal withstood a spirited performance from Leonardo Mayer to reach the third round of the Australian Open.

Australian Open champion Serena Williams believes she is playing the best tennis of her entire career.

Rafael Nadal admitted his exhausting five-set victory over Grigor Dimitrov will put him at a disadvantage against Roger Federer in the Australian Open final tomorrow (8.30am live on Eurosport, highlights BBC1 1pm).

Roger Federer insists his bid to win an 18th grand slam title in Sunday’s Australian Open final will not be hampered by injury.

Serena Williams will have to beat her sister Venus to win an Open era record 23rd grand slam title after she overcame Mirjana Lucic-Baroni at the Australian Open.

Andy Murray offered no excuses after losing to world number 50 Mischa Zverev and crashing out of the Australian Open.

Rafael Nadal delivered a resounding message to his Australian Open rivals by coming from behind to win a five-set thriller against Alexander Zverev.

Roger Federer admits his Australian Open comeback was harder than he expected after the 17-time grand slam champion battled past Jurgen Melzer to reach the second round.

Maria Sharapova has announced she failed a drugs test at the Australian Open.

Roger Federer has undergone knee surgery after suffering an injury on the day after his Australian Open semi-final defeat.

Germany’s Angelique Kerber pulled off a stunning victory to win the Australian Open and dash Serena Williams’ hopes of clinching a record-equalling 22nd grand slam title.

Andy Murray made it two British players in the Australian Open semi-finals as he dug deep to battle past Spain’s David Ferrer.

Roger Federer sent out a message he is ready to win an 18th grand slam title as the Swiss master breezed past Tomas Berdych in the Australian Open quarter-finals.

Serena Williams’ domination of the most one-sided rivalry in tennis continued as the American hammered Maria Sharapova to reach the Australian Open semi-finals.

Men's fourth seed Stan Wawrinka is out of the Australian Open.