Watson stuns Lisicki for Sharapova clash Heather Watson enjoyed one of the best wins of her career by overcoming Germany's Sabine Lisicki in the opening round of the Toray Pan Pacific Open. Watson, who had not won a match on the main tour since the London Olympics, triumphed 6-4 7-6 (7/3) in Tokyo. Lisicki, who has slipped to number 30 in the world rankings from a career-high 12 in May, conceded a solitary break of serve in the opening set and was unable to hit back on the four opportunities she created. A couple of breaks apiece meant the second went to a tie-breaker, which the 20-year-old from Guernsey won to set up a second-round clash with former world No 1 Maria Sharapova. Former world No 1 Caroline Wozniacki squeezed through to the second round, just one day after ending a 13-month title drought in South Korea. The Dane made hard work of beating Serb qualifier Bojana Jovanovski 6-0, 3-6, 6-4 in a match halted for an hour in the third set by torrential rain. Nine of the world's top ten women are competing in Tokyo this week at the $2.16 million (£1.4m) event, with the leading eight seeds receiving byes into the second round. Wozniacki, who captured the Korea Open on Sunday, powered through a first set played in a warm breeze before fatigue hit her in the second. The heavens broke at 3-3 in the decider and Wozniacki, down 15-30, eventually dropped her serve after waiting for the roof to be closed and the waterlogged court to be mopped dry. Normal service was quickly resumed, however, as the tenth seed took the next three games to wrap up victory in two hours 17 minutes after forcing Jovanovski into a wild backhand. "I was very lucky the rain came at 3-3 in the third," Wozniacki told reporters. I was feeling tired and it gave me a little time to relax and get my body back together. Serb Ana Ivanovic, another former world No 1, who is seeded 11th this week, progressed by beating Andrea Hlavackova 6-3 2-0 when the Czech retired with a thigh injury. Ivanovic, who reached the US Open quarter-finals earlier this month, said she still had the game to challenge for grand slam titles. "That's the only reason I'm still here," said Ivanovic. I already achieved two of my biggest dreams in winning a grand slam and being No 1 in the world. "But I believe I can still be at the top level and winning grand slams," added the Serb, who topped the rankings after winning the 2008 French Open. Ninth seed Marion Bartoli of France bundled out Japan's Kimiko Date-Krumm 6-1 6-4 -just four days before the local favourite's 42nd birthday. Wildcard Date-Krumm, who won the title in 1995, kicked an advertising board and left the court fuming at a boisterous fan, glaring back at the seats as she went to shake hands with Bartoli. "I was told there was a drunk fan," said the Japanese, who shouted angrily in the direction of the spectator after netting a forehand while threatening a late fightback. You're focusing so hard and it's extremely disappointing when people who are supposed to be supporting you are drunk and shouting when you hit the ball. Italy's former French Open champion, Francesca Schiavone, beat Yaroslava Shvedova of Kazakhstan 4-6 7-6 6-4 to set up a second-round match with Australian Samantha Stosur. Russia's Nadia Petrova overpowered Peng Shuai 6-1 6-4, ousting one of three Chinese taking part despite their country's fierce political row with Japan over disputed islands. Zheng Jie beat American Vania King 6-3 6-4 while last year's French Open champion, Li Na, opens her campaign against Russian Anastasia Pavlyuchenkova today.