Wozniacki wilts in Brisbane opener as Australian Open preparations hit
January 1, 2013 -- Updated 1025 GMT (1825 HKT)
Caroline Wozniacki slips to defeat against qualifier Ksenia Pervak in the first round of the Brisbane International.
- Caroline Wozniacki beaten in first round of Brisbane International
- Ksenia Pervak of Kazakhstan wins 2-6 6-3 7-6 in marathon match
- Australian Sam Stosur also exits to Swede Sofia Arvidsson
- Serena Williams already into second round
(CNN) -- Former World No.1 Caroline Wozniacki made a shaky start to the new WTA season with a shock defeat to Kazakhstan qualifier Ksenia Pervak in the first round of the Brisbane International Monday.
The Dane finished her 2012 campaign in fine fettle with an 18-3 record after the U.S. Open, but Pervak showed her promise with a 2-6 6-3 7-6 win in two hours 48 minutes.
Wozniacki, watched by her boyfriend, golf's World No.1 Rory McIlroy, powered through the opening set in just 29 minutes, but Pervak hit back to level.
The pair had gone to three sets in their previous two meetings, both won by Wozniacki, but this time the tables were turned.
Caroline Wozniacki's biggest year
Stars show for Japan
Is Serena Williams the greatest ever?
The eighth seed led 2-0 and 30-0 but Pervak broke back and was dominant in the tiebreak, winning it 7-1 for her first victory over a top ten player.
"It's tough to lose 7-6 in the third -- it could have gone either way, but it didn't go my way today," Wozniacki told the official WTA website.
"I had a good off-season. I've been working very hard. It's just always tough to play your first match of the season," she added.
Wozniacki will now head to Sydney to get in some match practice ahead of the Australian Open, while Russian-born Pervak goes into the second round at Brisbane for the first time in four attempts.
The shocks did not stop there as home hope and seventh seed Sam Stosur was beaten in the night match by Swede Sofia Arvidsson, going down 7-6 7-5.
Fourth seed Angelique Kerber came through in three sets against Georgia's Anna Tatishvili, while her fellow German Sabine Lisicki beat Czech Lucie Safarova 6-2 6-4.
Lisicki will play women's top seed Victoria Azarenka Wednesday.
Serena Williams is already into the second round with a straight sets win over Varvara Lepchenko.
In the men's ATP event, which is headed by Britain's Andy Murray, Japanese fifth seed Kei Nishikori began his campaign with a straights sets 7-5 6-2 win over Australian Marinko Matosevic.
Today's five most popular stories
Part of complete coverage on
December 16, 2014 -- Updated 1208 GMT (2008 HKT)
Rafael Nadal's body might be giving him a few problems, but his mind remains as strong as ever. Will the Spaniard add to his haul of 14 grand slam titles?
November 24, 2014 -- Updated 1342 GMT (2142 HKT)
A year that began in uncertainty for Roger Federer ended with a historic title for the 17-time grand slam champion and his country.
November 27, 2014 -- Updated 1716 GMT (0116 HKT)
The Scot has served up a few changes to his support team in 2014 but there's one person who isn't going anywhere -- his new fiancée Kim Sears.
September 11, 2014 -- Updated 1248 GMT (2048 HKT)
His distinctive crocodile logo is seen on clothing all over the world, but Rene Lacoste also left a lasting legacy in the development of tennis.
September 9, 2014 -- Updated 0636 GMT (1436 HKT)
Marin Cilic follows in the footsteps of his coach Goran Ivanicevic by claiming a grand slam crown for Croatia, winning the U.S. Open.
September 14, 2014 -- Updated 1334 GMT (2134 HKT)
Serena Williams is without peer in the modern women's game and now she is on a par with two American tennis legends from the past.
September 2, 2014 -- Updated 1321 GMT (2121 HKT)
Over the course of her remarkable life, Althea Gibson was many things to many people -- but it was tennis where she really left her mark.
August 27, 2014 -- Updated 1145 GMT (1945 HKT)
Canada and tennis? Really? Yup. The North American tennis power balance is swinging away from the States.
August 21, 2014 -- Updated 1252 GMT (2052 HKT)
As a player he was as fiery as his hair -- and as Novak Djokovic's coach, Boris Becker says he has to battle to keep his emotions in check.
August 20, 2014 -- Updated 1102 GMT (1902 HKT)
Tennis great Boris Becker says he was stunned by the level of criticism he received after being appointed as Novak Djokovic's coach.
July 25, 2014 -- Updated 1101 GMT (1901 HKT)
"I didn't cry once when I practiced in front of the mirror," says Martin Emmrich. But the nerves kicked in when he got down on one knee on court.
June 30, 2014 -- Updated 1135 GMT (1935 HKT)
When Agnieszka Radwanska refused to look her opponent in the eye after losing at Wimbledon, it raised more than eyebrows.
June 23, 2014 -- Updated 0114 GMT (0914 HKT)
It's 10 years since a teenage Maria Sharapova became the darling of Wimbledon's hallowed Center Court, launching herself as a star.
May 23, 2014 -- Updated 0746 GMT (1546 HKT)
He's regularly voted France's favorite famous person, but many of the nation's youth have "no idea" about his glorious sporting past
April 29, 2014 -- Updated 1555 GMT (2355 HKT)
Five-time grand slam champion Martina Hingis has followed her mom into a coaching role, setting up a new tennis academy in Barcelona, Spain.