<p>Roddick won the tie-breakers 7-4 and 7-5 to set up an all-American affair with John Isner, who beat Czech Tomas Berdych 6-3, 6-7, 6-2 at the $1.4 million hardcourt event. <br /><br />Fernando Gonzalez knocked out Tommy Haas of Germany 7-5, 6-4 and will face holder Juan Martin Del Potro, who progressed to the last four when Robin Soderling withdrew with an elbow injury. <br /><br />Roddick weathered 13 Karlovic aces on the way to his fifth win against the Croatian in a match featuring unusually long rallies for two of the hardest-hitters in the game. <br /><br />Gonzalez needed an hour and 23 minutes to subdue the 10th-seeded Haas, who was bidding to reach his fourth successive semifinal. <br /><br />Gonzalez, 29, scored the only service break of the opening set in the 11th game before serving it out. <br /><br />The Chilean then broke the 31-year-old German twice to take a 5-2 second-set lead before securing the win, his third in four hit-outs with Haas. <br /><br />Sharapova through<br />In Los Angeles, Maria Sharapova fought her way into the semifinals of the LA Championships with a 6-4, 7-5 win over Polish teenager Urszula Radwanska. <br /><br />Sharapova will face Flavia Pennetta in the last four after the Italian stunned second seed Vera Zvonareva of Russia 6-4, 6-2. Romania's Sorana Cirstea upset Agnieszka <br />Radwanska, Urszula's older sister, to set up a semifinal against Samantha Stosur, who beat Zheng Jie of China. <br /><br />Cirstea upset the elder Radwanska 7-6, 1-6, 7-5 and will now face Australian Stosur, who reached her second consecutive semifinal with a 4-6, 6-3, 6-4 win over China's Zheng. <br /><br />Cirstea received treatment for a right foot injury during the second set but hopes to be ready for Stosur. <br /><br />Last week, Stosur upset Wimbledon champion Serena Williams at the Stanford Classic before falling to eventual winner Marion Bartoli. <br /><br />Sania Mirza overcame local teenager Rebecca Marino 7-6 (2), 6-7 (3), 6-4 to enter the semifinals of the Vancouver Open tennis tournament, adds IANS. Next up for Sania is another Canadian Sharon Fichman, who defeated her compatriot and doubles partner Marie-Eve Pelletier 6-2, 6-1.<br /><br />The other semifinal will be between Canadian Stephanie Dubois and American Mashona Washington. Second-seed Dubois had no trouble beating world’s top-ranked junior Noppawan Lertcheewakarn of Thailand 6-1, 6-0, while Washington defeated US-based Canadian Heidi El Tabakh 6-4, 6-3.</p>
<p>Roddick won the tie-breakers 7-4 and 7-5 to set up an all-American affair with John Isner, who beat Czech Tomas Berdych 6-3, 6-7, 6-2 at the $1.4 million hardcourt event. <br /><br />Fernando Gonzalez knocked out Tommy Haas of Germany 7-5, 6-4 and will face holder Juan Martin Del Potro, who progressed to the last four when Robin Soderling withdrew with an elbow injury. <br /><br />Roddick weathered 13 Karlovic aces on the way to his fifth win against the Croatian in a match featuring unusually long rallies for two of the hardest-hitters in the game. <br /><br />Gonzalez needed an hour and 23 minutes to subdue the 10th-seeded Haas, who was bidding to reach his fourth successive semifinal. <br /><br />Gonzalez, 29, scored the only service break of the opening set in the 11th game before serving it out. <br /><br />The Chilean then broke the 31-year-old German twice to take a 5-2 second-set lead before securing the win, his third in four hit-outs with Haas. <br /><br />Sharapova through<br />In Los Angeles, Maria Sharapova fought her way into the semifinals of the LA Championships with a 6-4, 7-5 win over Polish teenager Urszula Radwanska. <br /><br />Sharapova will face Flavia Pennetta in the last four after the Italian stunned second seed Vera Zvonareva of Russia 6-4, 6-2. Romania's Sorana Cirstea upset Agnieszka <br />Radwanska, Urszula's older sister, to set up a semifinal against Samantha Stosur, who beat Zheng Jie of China. <br /><br />Cirstea upset the elder Radwanska 7-6, 1-6, 7-5 and will now face Australian Stosur, who reached her second consecutive semifinal with a 4-6, 6-3, 6-4 win over China's Zheng. <br /><br />Cirstea received treatment for a right foot injury during the second set but hopes to be ready for Stosur. <br /><br />Last week, Stosur upset Wimbledon champion Serena Williams at the Stanford Classic before falling to eventual winner Marion Bartoli. <br /><br />Sania Mirza overcame local teenager Rebecca Marino 7-6 (2), 6-7 (3), 6-4 to enter the semifinals of the Vancouver Open tennis tournament, adds IANS. Next up for Sania is another Canadian Sharon Fichman, who defeated her compatriot and doubles partner Marie-Eve Pelletier 6-2, 6-1.<br /><br />The other semifinal will be between Canadian Stephanie Dubois and American Mashona Washington. Second-seed Dubois had no trouble beating world’s top-ranked junior Noppawan Lertcheewakarn of Thailand 6-1, 6-0, while Washington defeated US-based Canadian Heidi El Tabakh 6-4, 6-3.</p>
