<p>Andy Murray produced a masterclass in tennis to destroy the highly rated Milos Raonic on Monday and book his place in the quarterfinals of the US Open.<br /><br /></p>.<p>The Olympic champion provided more evidence he could be ready to add a first Grand Slam title to the gold medal he won in London last month when he blunted one of the biggest serves in the game to win 6-4, 6-4, 6-2.<br /><br />Serena Williams was just as ruthless as she charged into the women's quarters with a 6-0, 6-0 win over Czech Andrea Hlavackova while Roger Federer was gifted a spot in the last eight when Mardy Fish withdrew from the year's final Grand Slam.<br /><br />Showing no mercy against her 82nd-ranked opponent, Williams sent an ominous warning of her intention to add the US Open title to her recent wins at Wimbledon and the London Olympics with a rare ‘double bagel’ victory in 57 minutes.<br /><br />Williams won the last of her three US Open titles in 2008 but on the evidence of her performances so far, a fourth title at Flushing Meadows appears well within her reach although her toughest challenges await.<br /><br />The American's next opponent is Serbia's Ana Ivanovic, a former world number one who has rediscovered her best after a lean few years where she struggled with injuries.<br /><br />Ivanovic advanced on Monday with an impressive 6-0, 6-4 victory over Bulgarian Tsvetana Pironkova.<br /><br />Federer advanced to his 34th consecutive Grand Slam quarterfinal without hitting a ball on the Labour Day holiday in the United States as Fish pulled out with an undisclosed health issue.<br /><br />The pair were due to clash in the fourth round but Fish, who missed part of the season because of a heart ailment and had treatment for an unspecified illness after his gruelling third round win over Gilles Simon on Saturday night, announced he was pulling out.<br /><br />“I regret that I have to withdraw from the US Open for precautionary measures,” the American said in a statement. “I was reluctant to do so, but am following medical advisement. I had a good summer and look forward to resuming my tournament schedule in the fall.”<br /><br />World number one Federer has not dropped a set in this year's US Open at Flushing Meadows. The 31-year-old Swiss will now play Tomas Berdych after the Czech sixth seed thrashed Spain's Nicolas Almagro 7-6, 6-4, 6-1.<br /><br />Poland's Agnieszka Radwanska, the women's second seed, became the highest ranked casualty of the tournament when she lost to Roberta Vinci 6-1, 6-4. The Italian will now play doubles partner and best friend Sara Errani after she upset Germany's Angelique Kerber 7-6, 6-3.<br /><br />Croatia's big-serving Marin Cilic defeated Slovakia's Martin Klizan 7-5, 6-4, 6-0 to secure a place against Murray, who cruised to victory in two hours.<br /><br />Raonic boasts one of the biggest serves in the game but Murray broke him four times and never once faced a break point on his own serve.<br /><br />“It's the last major event of the season so I want to make sure I leave everything out there on the court,” Murray said. “Today was by far my best match of the tournament.”<br />Paes, Sania exit<br /><br />Leander Paes and Sania Mirza, along with their respective partners, crashed out of the mixed doubles event of the US Open after losing in the quarterfinals here.<br /><br />The third-seeded Indo-Russian pair of Paes and Elena Vesnina was stunned by the seventh-seeded Czech duo of Lucie Hradecka and Frantisek Cermak 6-7 (2-7), 5-7.<br /><br />Sania along with her British partner Colin Fleming also went down in straight sets to fourth seeds Kveta Peschke of Czech Republic and Poland’s Marcin Matkowski.<br /><br />Unseeded Sania and Fleming failed to match their more fancied opponents in the match to bow out in just 69 minutes, losing 3-6, 5-7.<br /><br />Results (fourth round): Men’s singles: 3-Andy Murray (Gbr) bt 15-Milos Raonic (Can) 6-4, 6-4, 6-2; 12-Marin Cilic (Cro) bt Martin Klizan (Svk) 7-5, 6-4, 6-0; 1-Roger Federer (Sui) w/o 23-Mardy Fish (US); 6-Tomas Berdych (Cze) bt 11-Nicolas Almagro (Esp) 7-6 (7-4), 6-4, 6-1.<br /><br />Women’s singles: 20-Roberta Vinci (Ita) bt 2-Agnieszka Radwanska (Pol) 6-1, 6-4; 10-Sara Errani (Ita) bt 6-Angelique Kerber (Ger) 7-6 (7-5), 6-3; 4-Serena Williams (US) bt Andrea Hlavackova (Cze) 6-0, 6-0; 12-Ana Ivanovic (Srb) bt Tsvetana Pironkova (Bul) 6-0, 6-4.</p>
<p>Andy Murray produced a masterclass in tennis to destroy the highly rated Milos Raonic on Monday and book his place in the quarterfinals of the US Open.<br /><br /></p>.<p>The Olympic champion provided more evidence he could be ready to add a first Grand Slam title to the gold medal he won in London last month when he blunted one of the biggest serves in the game to win 6-4, 6-4, 6-2.<br /><br />Serena Williams was just as ruthless as she charged into the women's quarters with a 6-0, 6-0 win over Czech Andrea Hlavackova while Roger Federer was gifted a spot in the last eight when Mardy Fish withdrew from the year's final Grand Slam.<br /><br />Showing no mercy against her 82nd-ranked opponent, Williams sent an ominous warning of her intention to add the US Open title to her recent wins at Wimbledon and the London Olympics with a rare ‘double bagel’ victory in 57 minutes.<br /><br />Williams won the last of her three US Open titles in 2008 but on the evidence of her performances so far, a fourth title at Flushing Meadows appears well within her reach although her toughest challenges await.<br /><br />The American's next opponent is Serbia's Ana Ivanovic, a former world number one who has rediscovered her best after a lean few years where she struggled with injuries.<br /><br />Ivanovic advanced on Monday with an impressive 6-0, 6-4 victory over Bulgarian Tsvetana Pironkova.<br /><br />Federer advanced to his 34th consecutive Grand Slam quarterfinal without hitting a ball on the Labour Day holiday in the United States as Fish pulled out with an undisclosed health issue.<br /><br />The pair were due to clash in the fourth round but Fish, who missed part of the season because of a heart ailment and had treatment for an unspecified illness after his gruelling third round win over Gilles Simon on Saturday night, announced he was pulling out.<br /><br />“I regret that I have to withdraw from the US Open for precautionary measures,” the American said in a statement. “I was reluctant to do so, but am following medical advisement. I had a good summer and look forward to resuming my tournament schedule in the fall.”<br /><br />World number one Federer has not dropped a set in this year's US Open at Flushing Meadows. The 31-year-old Swiss will now play Tomas Berdych after the Czech sixth seed thrashed Spain's Nicolas Almagro 7-6, 6-4, 6-1.<br /><br />Poland's Agnieszka Radwanska, the women's second seed, became the highest ranked casualty of the tournament when she lost to Roberta Vinci 6-1, 6-4. The Italian will now play doubles partner and best friend Sara Errani after she upset Germany's Angelique Kerber 7-6, 6-3.<br /><br />Croatia's big-serving Marin Cilic defeated Slovakia's Martin Klizan 7-5, 6-4, 6-0 to secure a place against Murray, who cruised to victory in two hours.<br /><br />Raonic boasts one of the biggest serves in the game but Murray broke him four times and never once faced a break point on his own serve.<br /><br />“It's the last major event of the season so I want to make sure I leave everything out there on the court,” Murray said. “Today was by far my best match of the tournament.”<br />Paes, Sania exit<br /><br />Leander Paes and Sania Mirza, along with their respective partners, crashed out of the mixed doubles event of the US Open after losing in the quarterfinals here.<br /><br />The third-seeded Indo-Russian pair of Paes and Elena Vesnina was stunned by the seventh-seeded Czech duo of Lucie Hradecka and Frantisek Cermak 6-7 (2-7), 5-7.<br /><br />Sania along with her British partner Colin Fleming also went down in straight sets to fourth seeds Kveta Peschke of Czech Republic and Poland’s Marcin Matkowski.<br /><br />Unseeded Sania and Fleming failed to match their more fancied opponents in the match to bow out in just 69 minutes, losing 3-6, 5-7.<br /><br />Results (fourth round): Men’s singles: 3-Andy Murray (Gbr) bt 15-Milos Raonic (Can) 6-4, 6-4, 6-2; 12-Marin Cilic (Cro) bt Martin Klizan (Svk) 7-5, 6-4, 6-0; 1-Roger Federer (Sui) w/o 23-Mardy Fish (US); 6-Tomas Berdych (Cze) bt 11-Nicolas Almagro (Esp) 7-6 (7-4), 6-4, 6-1.<br /><br />Women’s singles: 20-Roberta Vinci (Ita) bt 2-Agnieszka Radwanska (Pol) 6-1, 6-4; 10-Sara Errani (Ita) bt 6-Angelique Kerber (Ger) 7-6 (7-5), 6-3; 4-Serena Williams (US) bt Andrea Hlavackova (Cze) 6-0, 6-0; 12-Ana Ivanovic (Srb) bt Tsvetana Pironkova (Bul) 6-0, 6-4.</p>