Federer and Murray advance to last 16 of U.S. Open
September 1, 2012 -- Updated 2253 GMT (0653 HKT)
A tired Andy Murray reacts after losing a point in his match against Feliciano Lopez.
- Roger Federer beats Fernando Verdasco in straight sets
- No.1 seed bidding to add to Wimbledon crown in 2012
- Andy Murray battles past Feliciano Lopez in four sets
- Martin Klizan continues surprise run to fourth round
(CNN) -- Roger Federer and Andy Murray took contrasting routes into the last 16 of the U.S. Open Saturday in 32-degree heat and stifling humidity.
Top seed Federer beat 25th seed Fernando Verdasco 6-3 6-4 6-4 to make the fourth round for the 12th successive year.
But Murray nearly fell victim to the conditions against his Spanish opponent Feliciano Lopez, surviving a grueling four-set encounter.
Jim Courier's U.S. Open tips
Can Murray win first tennis grand slam?
The third seed, who beat Federer to win the Olympic title last month, led by two tiebreak sets until wilting in the third.
Up a break, the Briton conceded the advantage and was broken himself three times as the big-hitting left hander Lopez took command.
Murray also struggled to hold in the fourth, but a gritty effort took him to the third tiebreak of the match, which he won 7-4 to progress after over three and a half hours.
He will next face the winner of a later match between American James Blake and 15th-seeded Canadian Milos Raonic.
"This was the first match I had played in this humidity for a while so it was tough," Murray admitted to reporters after his escape.
Meanwhile Federer was never seriously troubled as he earned a clash with either American 23rd seed Mardy Fish or Gilles Simon, the French 16th seed.
Spanish hopes in the absence of the injured Rafael Nadal now rest with consistent Nicolas Almagro, who beat American wildcard Jack Sock in four sets.
Croatian12th seed Marin Cilic beat Japanese 17th seed Kei Nishikori, also in four sets, to earn a last 16 match with unseeded Martin Klizan.
The Slovakian, who accounted for Jo-Wilfried Tsonga in the previous round, beat his doubles partner Jeremy Chardy of France 6-4 6-4 6-4.
Part of complete coverage on
December 5, 2013 -- Updated 1517 GMT (2317 HKT)
South Africa may just have found another Paralympian to inspire a nation -- and perhaps the world.
November 26, 2013 -- Updated 1253 GMT (2053 HKT)
Marion Bartoli's tennis career had its ups and downs -- both personal and professional. Discover what has made the Wimbledon winner happy.
November 22, 2013 -- Updated 1654 GMT (0054 HKT)
Maria Sharapova has turned to her third coach of 2013 as she seeks to bounce back from shoulder problems.
November 21, 2013 -- Updated 1158 GMT (1958 HKT)
Hitting partner Sascha Bajin and coach Patrick Mouratoglou offer a glimpse into the life of the world No. 1.
November 29, 2013 -- Updated 1706 GMT (0106 HKT)
Down and out in Paris, Serena Williams turned to a man who has helped her become more dominant than ever before.
November 20, 2013 -- Updated 1003 GMT (1803 HKT)
World Anti-Doping Agency president John Fahey tells CNN he doesn't think Novak Djokovic "has the faintest idea" what his organization does.
The Davis Cup can step up to a new level of popularity by following the example of football's top tournament, says CNN's Will Edmonds.
November 12, 2013 -- Updated 1546 GMT (2346 HKT)
A year that began with a fourth Australian Open title ended similarly triumphant for Novak Djokovic at the ATP Tour finale.
CNN's Will Edmonds says Serena Williams can match Steffi Graf's record haul of 22 grand slam titles following her U.S. Open triumph.
September 9, 2013 -- Updated 1224 GMT (2024 HKT)
Two years after losing part of her lung during a blood clot operation, U.S. Open champion Serena Williams insists playing tennis "is just fun now."
September 4, 2013 -- Updated 1130 GMT (1930 HKT)
Her doubles playing dad is the sporting star of the family, but Micaela Bryan's Twitter page is making the toddler a viral sensation.
Roger Federer is now in danger of diminishing his incredible tennis legacy, says CNN's Will Edmonds.
August 27, 2013 -- Updated 1107 GMT (1907 HKT)
Tennis parents don't have the best of reputations. Think Damir Dokic, John Tomic and Jim Pierce. However, Andy Murray's Mum is very different.
August 15, 2013 -- Updated 1421 GMT (2221 HKT)
Marion Bartoli has retired from tennis with immediate effect, just six weeks after winning her first grand slam title at Wimbledon.
November 19, 2013 -- Updated 1310 GMT (2110 HKT)
When the women's singles champion at the U.S. Open picks up her $2.6 million check, she should spare a moment to thank Billie Jean King.
Today's five most popular stories