<p>Djokovic, the 2008 champion, had to come from a break down in each set against the Brazilian, who put up a lively display but at times had trouble keeping his big serve under control. <br /><br />Verdasco, fresh from his triumph at last week's Barcelona Open, booked his place in the last eight with a 6-4, 7-6 win over his compatriot Guillermo Garcia-Lopez. <br />Wozniacki crashes out<br />Caroline Wozniacki's ankle injury returned to haunt her as the top seed was knocked out of the Stuttgart Open in straight sets by Lucie Safarova. <br /><br />The world number two, who retired hurt during a match at the Family Circle Cup in Charleston two weeks ago after injuring her ankle in a tumble, said she was still struggling as she lost 6-4, 6-4 in her first match in Stuttgart. On Wednesday, four-times French Open champion Justine Henin overcame a broken finger and fired-up German opponent to win her opening match her first clay court tournament since her comeback. <br />The 27-year-old was taken to a tiebreak in the first set before breaking Julia Goerges' resistance in the second for a 7-6, 6-1 first-round win. <br /><br />Li Na of China got the netter of third seeded Russian Svetlana Kuznetsova 6-3, 7-5 while Agnieszka Radwanska (5) went out to Israel's Shahar Peer 6-3, 6-7, 6-2.<br />Victoria Azarenka (6) of Belarus eased past Italian Flavia Penneta 6-1, 6-4 with Serbia’s Jelena Jankovic dispatching Gisela Dulko of Argentina 6-2, 6-2.<br /></p>
<p>Djokovic, the 2008 champion, had to come from a break down in each set against the Brazilian, who put up a lively display but at times had trouble keeping his big serve under control. <br /><br />Verdasco, fresh from his triumph at last week's Barcelona Open, booked his place in the last eight with a 6-4, 7-6 win over his compatriot Guillermo Garcia-Lopez. <br />Wozniacki crashes out<br />Caroline Wozniacki's ankle injury returned to haunt her as the top seed was knocked out of the Stuttgart Open in straight sets by Lucie Safarova. <br /><br />The world number two, who retired hurt during a match at the Family Circle Cup in Charleston two weeks ago after injuring her ankle in a tumble, said she was still struggling as she lost 6-4, 6-4 in her first match in Stuttgart. On Wednesday, four-times French Open champion Justine Henin overcame a broken finger and fired-up German opponent to win her opening match her first clay court tournament since her comeback. <br />The 27-year-old was taken to a tiebreak in the first set before breaking Julia Goerges' resistance in the second for a 7-6, 6-1 first-round win. <br /><br />Li Na of China got the netter of third seeded Russian Svetlana Kuznetsova 6-3, 7-5 while Agnieszka Radwanska (5) went out to Israel's Shahar Peer 6-3, 6-7, 6-2.<br />Victoria Azarenka (6) of Belarus eased past Italian Flavia Penneta 6-1, 6-4 with Serbia’s Jelena Jankovic dispatching Gisela Dulko of Argentina 6-2, 6-2.<br /></p>