<p>Defending champion Li Na of China crashed out of the French Open on Monday while Maria Sharapova overcame a catalogue of errors on a bitterly cold day in Paris to struggle into the quarterfinals for the sixth time.<br /><br /></p>.<p>Li, who was Asia’s first Grand Slam singles champion when she took the 2011 title, lost her crown at the fourth round stage, going down 3-6, 6-2, 6-0 to Kazakh qualifier Yaroslava Shvedova, the world 142.<br /><br />Men’s defending champion Rafael Nadal of Spain encountered no such problems, bulldozing into the quarterfinals with an awe-inspiring 6-2, 6-0, 6-0 demolition of Argentine 13th seed Juan Monaco. <br /><br />Second seed Nadal, who has dropped only 19 games in four matches, next faces compatriot Nicolas Almagro, the 12th seed, for a place in the semifinals.<br /><br />World number seven Li was attempting to be the first French Open women’s champion to successfully defend the title since Justine Henin in 2007. But after a confident start on Suzanne Lenglen court, the 30-year-old endured a spectacular meltdown in the second set and never recovered, notching 41 errors and ending up being broken seven times by her 24-year-old opponent.<br /><br />“I lost one match so don’t try to put me down,” Li, who hasn’t won a title since her Paris victory, snapped at a tense post-match news conference. “This is tennis. I will try to find the reason why I lost.”<br /><br />Shvedova, who was also a quarterfinalist in 2010, had to come through qualifying after an injury-hit 2011 saw her ranking plummet at one stage to 206. She will now face fourth-seeded Wimbledon champion Petra Kvitova who knocked out American Varvara Lepchenko 6-2, 6-1.<br /><br />Sharapova struggled into the quarterfinals, defeating Czech veteran Klara Zakopalova 6-4, 6-7 (5/7), 6-2 in an error-scarred clash which featured 21 breaks of serve. <br /><br />The Russian second seed, seeking a Roland Garros title to complete a career Grand Slam, goes on to face Estonian 23rd seed Kaia Kanepi who put out Arantxa Rus of the Netherlands 6-1, 4-6, 6-0. But Sharapova will be hoping for an improvement in conditions in Wednesday’s quarterfinal after a stiff wind and bitter cold, which saw temperatures dip to a chilly 14 degrees, played havoc with her game, temper and movement. The statistics of Monday’s match on Philippe Chatrier court told a grim tale.<br /><br />Sharapova finished with 53 unforced errors to her opponent’s 48 and served up 12 double faults against seven. With serve constantly under siege, Sharapova carved out a massive 31 break points in total, converting 12.<br /><br />Sharapova, the favourite for the title following the exits of top seed Victoria Azarenka, Li and Serena Williams, rarely settled in the three hour 11 minute encounter.<br /><br />Twice she argued with umpire Julie Kjendlie while also taking an embarrassing, bottom-first tumble on to the damp red clay midway during the ninth game of the second set. <br /><br />In a neat snapshot of the match, Sharapova double-faulted on match point in the seventh game of the final set; Zakopalova suffered a similar lapse in the next game to hand her opponent victory.<br /><br />In the men’s singles, Juan Martin del Potro edged past Tomas Berdych in a battle of big-hitting baseliners to book his spot in the last-eight, winning 7-6, 1-6, 6-3, 7-5. He will play Roger Federer in the quarters. Fourth seed Andy Murray also advanced, after packing off Richard Gasquet of France 1-6, 6-4, 6-1, 6-2.<br /><br />Sania-Bhupathi win<br /><br />Sania Mirza and Mahesh Bhupathi inched towards their second Grand Slam title together as they progressed to the mixed doubles semifinals after shocking second seeds Kveta Peschke and Mike Bryan 6-2, 6-3 in just under an hour. <br /><br />Fourth round results (prefix denotes seeding): Men’s singles: 4-Andy Murray (Britain) bt 17-Richard Gasquet (France) 1-6, 6-4, 6-1, 6-2; 2-Rafa Nadal (Spain) bt 13-Juan Monaco (Argentina) 6-2, 6-0, 6-0; 9-Juan Martin Del Potro (Arg) bt 7-Tomas Berdych (Cze) 7-6 (8-6), 1-6, 6-3, 7-5; 5-Jo-Wilfried Tsonga (Fra) bt 18-Stanislas Wawrinka (Sui) 6-4, 7-6 (8-6), 3-6, 3-6, 6-4; 12-Nicolas Almagro (Esp) bt 8-Janko Tipsarevic (Srb) 6-4, 6-4, 6-4; 6-David Ferrer (Esp) bt 20-Marcel Granollers (Esp) 6-3, 6-2, 6-0. <br /><br />Women’s singles: 2-Maria Sharapova (Rus) bt Klara Zakopalova (Cze) 6-4, 6-7 (5-7), 6-2; Yaroslava Shvedova (Kaz) bt 7-Li Na (Chn) 3-6, 6-2, 6-0; 4-Petra Kvitova (Czech Republic) beat Varvara Lepchenko (US) 6-2 6-1; 23-Kaia Kanepi (Estonia) bt Arantxa Rus (Netherlands) 6-1, 4-6, 6-0.</p>
<p>Defending champion Li Na of China crashed out of the French Open on Monday while Maria Sharapova overcame a catalogue of errors on a bitterly cold day in Paris to struggle into the quarterfinals for the sixth time.<br /><br /></p>.<p>Li, who was Asia’s first Grand Slam singles champion when she took the 2011 title, lost her crown at the fourth round stage, going down 3-6, 6-2, 6-0 to Kazakh qualifier Yaroslava Shvedova, the world 142.<br /><br />Men’s defending champion Rafael Nadal of Spain encountered no such problems, bulldozing into the quarterfinals with an awe-inspiring 6-2, 6-0, 6-0 demolition of Argentine 13th seed Juan Monaco. <br /><br />Second seed Nadal, who has dropped only 19 games in four matches, next faces compatriot Nicolas Almagro, the 12th seed, for a place in the semifinals.<br /><br />World number seven Li was attempting to be the first French Open women’s champion to successfully defend the title since Justine Henin in 2007. But after a confident start on Suzanne Lenglen court, the 30-year-old endured a spectacular meltdown in the second set and never recovered, notching 41 errors and ending up being broken seven times by her 24-year-old opponent.<br /><br />“I lost one match so don’t try to put me down,” Li, who hasn’t won a title since her Paris victory, snapped at a tense post-match news conference. “This is tennis. I will try to find the reason why I lost.”<br /><br />Shvedova, who was also a quarterfinalist in 2010, had to come through qualifying after an injury-hit 2011 saw her ranking plummet at one stage to 206. She will now face fourth-seeded Wimbledon champion Petra Kvitova who knocked out American Varvara Lepchenko 6-2, 6-1.<br /><br />Sharapova struggled into the quarterfinals, defeating Czech veteran Klara Zakopalova 6-4, 6-7 (5/7), 6-2 in an error-scarred clash which featured 21 breaks of serve. <br /><br />The Russian second seed, seeking a Roland Garros title to complete a career Grand Slam, goes on to face Estonian 23rd seed Kaia Kanepi who put out Arantxa Rus of the Netherlands 6-1, 4-6, 6-0. But Sharapova will be hoping for an improvement in conditions in Wednesday’s quarterfinal after a stiff wind and bitter cold, which saw temperatures dip to a chilly 14 degrees, played havoc with her game, temper and movement. The statistics of Monday’s match on Philippe Chatrier court told a grim tale.<br /><br />Sharapova finished with 53 unforced errors to her opponent’s 48 and served up 12 double faults against seven. With serve constantly under siege, Sharapova carved out a massive 31 break points in total, converting 12.<br /><br />Sharapova, the favourite for the title following the exits of top seed Victoria Azarenka, Li and Serena Williams, rarely settled in the three hour 11 minute encounter.<br /><br />Twice she argued with umpire Julie Kjendlie while also taking an embarrassing, bottom-first tumble on to the damp red clay midway during the ninth game of the second set. <br /><br />In a neat snapshot of the match, Sharapova double-faulted on match point in the seventh game of the final set; Zakopalova suffered a similar lapse in the next game to hand her opponent victory.<br /><br />In the men’s singles, Juan Martin del Potro edged past Tomas Berdych in a battle of big-hitting baseliners to book his spot in the last-eight, winning 7-6, 1-6, 6-3, 7-5. He will play Roger Federer in the quarters. Fourth seed Andy Murray also advanced, after packing off Richard Gasquet of France 1-6, 6-4, 6-1, 6-2.<br /><br />Sania-Bhupathi win<br /><br />Sania Mirza and Mahesh Bhupathi inched towards their second Grand Slam title together as they progressed to the mixed doubles semifinals after shocking second seeds Kveta Peschke and Mike Bryan 6-2, 6-3 in just under an hour. <br /><br />Fourth round results (prefix denotes seeding): Men’s singles: 4-Andy Murray (Britain) bt 17-Richard Gasquet (France) 1-6, 6-4, 6-1, 6-2; 2-Rafa Nadal (Spain) bt 13-Juan Monaco (Argentina) 6-2, 6-0, 6-0; 9-Juan Martin Del Potro (Arg) bt 7-Tomas Berdych (Cze) 7-6 (8-6), 1-6, 6-3, 7-5; 5-Jo-Wilfried Tsonga (Fra) bt 18-Stanislas Wawrinka (Sui) 6-4, 7-6 (8-6), 3-6, 3-6, 6-4; 12-Nicolas Almagro (Esp) bt 8-Janko Tipsarevic (Srb) 6-4, 6-4, 6-4; 6-David Ferrer (Esp) bt 20-Marcel Granollers (Esp) 6-3, 6-2, 6-0. <br /><br />Women’s singles: 2-Maria Sharapova (Rus) bt Klara Zakopalova (Cze) 6-4, 6-7 (5-7), 6-2; Yaroslava Shvedova (Kaz) bt 7-Li Na (Chn) 3-6, 6-2, 6-0; 4-Petra Kvitova (Czech Republic) beat Varvara Lepchenko (US) 6-2 6-1; 23-Kaia Kanepi (Estonia) bt Arantxa Rus (Netherlands) 6-1, 4-6, 6-0.</p>