Caroline Wozniacki's Australian Open preparations took a hit on Monday when she was forced to withdraw from her first-round match at the Sydney International with a wrist injury.
Wozniacki had dropped the first set to Barbora Zahlavova Styrcova of the Czech Republic 6-4 and was tied at 1-1 in the second set when she walked to the net and indicated she couldn't continue.
Australia's Samantha Stosur overcame her home-crowd jitters to rally for a 7-6 (3), 5-7, 6-3 win over Lucie Safarova in the first round of the Sydney International on Monday.
Juan Martin del Potro launched his comeback from a serious wrist injury with a convincing 6-3, 7-6 (4) win over Sergiy Stakhovsky in the first round of the Sydney International on Tuesday.
Top seed Simona Halep withdrew from the Sydney International tennis tournament on Tuesday with gastroenteritis.
Halep started the 2015 season by winning her ninth career title at the Shenzhen Open. She believes she contracted the illness while in China and hopes to fully recover in time for the Australian Open, which starts next Monday at Melbourne Park.
Juan Martin del Potro continued his promising return from an 11-month injury layoff by beating top-seeded Fabio Fognini 4-6, 6-2, 6-2 on Wednesday to reach the quarterfinals of the Sydney International.
Defending champion Juan Martin del Potro was beaten in the quarterfinals of the Sydney International on Thursday, losing 7-6 (5), 7-6 (3) to Kazakhstan qualifier Mikhail Kukushkin.
Wimbledon champion and second-seeded Petra Kvitova beat Tsvetana Pironkova of Bulgaria 7-5, 6-1 to advance to the women's singles final. Kvitova will play Karolina Pliskova, who beat Germany's Angelique Kerber 6-3, 6-2.
Wimbledon champion Petra Kvitova beat her Czech Fed Cup teammate Karolina Pliskova 7-6 (5), 7-6 (6) to win the Sydney International women's singles title Friday.
In the men's semifinals, Viktor Troicki of Serbia and Mikhail Kukushkin advanced to Sunday's final. Troicki beat Gilles Muller 6-2, 6-4 and Kukushkin defeated Leonardo Mayer of Argentina 6-4, 6-4.