DUESSELDORF, Germany — Top-seeded Janko Tipsarevic lost in the second round of the Power Horse Cup on Wednesday, falling 7-6 (1), 6-1 to Argentine qualifier Guido Pella. Pella will play seventh-seeded Viktor Troicki of Serbia, who defeated Grega Zemlja of Slovenia 6-3, 7-6 (3). Third-seeded Juan Monaco of Argentina topped Andre Ghem 6-4, 6-4 of Brazil to set up a quarterfinal with Germany's Tobias Kamke, who beat Aljaz Bedene of Slovenia 6-1, 6-4. Second-seeded Tommy Haas of Germany rallied past Ivan Dodig of Croatia 3-6, 6-4, 7-5. Hsieh, Niculescu lose Seeded players Hsieh Su-wei of Taiwan and Monica Niculescu of Romania were beaten Wednesday in the second round of the Strasbourg International in France. The fourth-seeded Hsieh lost 6-4, 4-6, 7-6 (3) to Misaki Doi of Japan, and fifth-seeded Niculescu fell 4-6, 6-3, 6-2 to Anna Tatishvili of Georgia. Seventh-seeded Chanelle Scheepers of South Africa reached the quarterfinals by beating American Shelby Rogers 2-6, 6-3, 6-4. Flavia Pennetta, Johanna Larsson, Eugenie Bouchard and Lucie Hradecka also advanced to the last eight. Querrey in quarters Sam Querrey reached the quarterfinals of the Nice Open by beating Sergiy Stakhovsky of Ukraine 7-5, 6-3 Wednesday. The third-seeded American broke three times compared to Stakhovsky converting only one of seven opportunities. Querrey will play French wild card Edouard Roger-Vasselin, who rallied to defeat Ricardas Berankis of Lithuania 2-6, 6-4, 6-2. — Agencies
