seeded Fernando Verdasco fended off two match points and narrowly avoided a second-round upset at the Legg Mason Classic Tuesday, while Mardy Fish extended the longest winning streak of his career to 11 matches. Second-seeded Andy Roddick had little trouble in his opening match, beating Serbian qualifier Grega Zemjla 6-4, 6-4 in the second round. In the final match of the night, fifth-seeded John Isner needed two tiebreakers to defeat Thiemo de Bakker, 7-6 (6), 7-6 (8). Verdasco twice faced match point in the second set before coming back to beat Michael Berrer 4-6, 7-5, 7-6 (6). Fish, who is seeded 15th, beat Viktor Troicki 6-4, 6-3. Also in the second round, fourth-seeded Marin Cilic defeated Denis Istomin 6-4, 6-2 and Xavier Malisse upset No. 12-seeded Julien Benneteau 7-5, 6-4. In other matches, Marco Chiudinelli beat Brian Dabul 7-6 (3), 6-2; Janko Tipsarevic defeated Arnaud Clement 6-4, 6-0 and Alejandro Falla won against Lu Yen-hsun, 7-5, 6-1. Kristof Vliegen advanced when Richard Gasquet retired after dropping the first set 6-3. Zvonareva wins on return Vera Zvonareva has won in her first match since finishing as the Wimbledon runner-up, beating Dominika Cibulkova 6-0, 3-6, 6-4 at the Mercury Insurance Open. Daniela Hantuchova of Slovakia fought off two match points as she upset sixth-seeded Marion Bartoli of France, 3-6, 7-6 (3), 6-4 in the featured night match. The struggles continued for former No. 1-ranked Ana Ivanovic, who lost 7-6 (3), 6-3 to No. 7 Shahar Peer of Israel. Unseeded Svetlana Kuznetsova pulled the tournament's first upset with a 6-3, 2-6, 6-1 win over No. 8 seed Yanina Wickmayer of Belgium. In other first-round matches, Agnieszka Radwanska of Poland eliminated South Africa's Chanelle Scheepers, 7-5, 6-3; Flavia Pennetta of Italy beat Ukraine's Kateryna Bondarenko, 6-2, 7-5; Yaroslava Shvedova of Kazakhstan defeated Russia's Nadia Petrova 5-7, 6-4, 6-1; Russia's Maria Kirilenko defeated Kurumi Nara of Japan 6-4, 6-7 (4), 6-3; Jie Zheng of China was a 6-3, 6-2 winner over American Shenay Perry, and wild-card Gisela Dulko of Argentina retired with a right ankle sprain while trailing American qualifier Coco Vandeweghe 6-0, 3-0. Li Na advances Second-seeded Li Na of China beat Elena Baltacha of Britain 6-3, 6-2 on Wednesday to reach the quarterfinals of the Danish Open. Li broke her opponent three times and never lost serve in the second round of the inaugural event. In other second-round matches, seventh-seeded Klara Zakopalova of Czech Republic easily beat Tatjana Malek of Germany 6-0, 6-3, and No. 5 Julia Goerges beat fellow German Kristina Barrois 6-3, 6-2. Goerges will next face the winner of second-round match between Dane Caroline Wozniacki and Iveta Benesova of the Czech Republic.