After a very slow start of season, Caroline Wozniacki launched her clay-court swing with a straight-set win at the Volvo Car Open. The No. 5-seeded Dane triumphed over German Laura Siegemund, 6-2, 6-2 in the second round. The 28-year-old Grand Slam winner plays No. 12-seeded Mihaela Buzarnescu in the round of 16. The 30-year-old Romanian took out American Lauren Davis, 6-3, 6-2.