Rafael Nadal is to miss the Barclays ATP World Tour Finals in London to undergo appendix surgery.
Li Na won her second Grand Slam title after beating Dominika Cibulkova in Melbourne. The 2015 Australian Open will take place from 19 January to 1 February. For information visit the official Australian Open site.
Teen sensation Borna Coric saw off childhood hero Rafael Nadal to set up a Basel semi-final showdown with David Goffin.
Andy Murray made it through to the semi-finals of the Valencia Open with a win against Kevin Anderson on Friday.
Andy Murray will start his campaign at the BNP Paribas Masters in Paris against Julien Benneteau or Yen-Hsun Lu.
Maria Sharapova's hopes of winning the WTA Finals ended despite victory over Agnieszka Radwanska.
Roger Federer survived a scare to reach the quarter-finals of his home-town tournament in Basel.
Serena Williams bounced back to form in fine fashion on Thursday to boost her chances of progressing at the WTA Finals.
Andy Murray opened his Valencia Open challenge with a 6-3 6-3 win over Jurgen Melzer.
Serena Williams was thrashed 6-0 6-2 by Simona Halep at the WTA Finals, equalling the worst defeat of her career.
Novak Djokovic has stated his intention to play at the Paris Masters after the birth of his son.