World number one Roger Federer had to play three sets to reach the Qatar Open semi-finals on Thursday, while number two Rafael Nadal had an easier ride when his opponent retired injured to put him in the last four. Swiss Federer survived a scare from 21-year-old Latvian Ernests Gulbis before winning 6-2, 4-6, 6-4 to progress to the next round where he will face Russian third seed Nikolay Davydenko who beat big-serving Croat Ivo Karlovic 7-6, 7-6.
Fourth seed Nikolay Davydenko threw away a two-set lead before going down 4-6, 2-6, 6-2, 6-2, 6-4 to Croatian Ivan Ljubicic in the third round of the French Open on Saturday. Ljubicic, seeded 28th, will next face France's Gael Monfils, who beat Austrian Juergen Melzer.
Tommy Robredo won a first-round thriller against Philipp Kohlschreiber in the first round of the Hamburg Masters.
Just 24 hours after showing second seed Andy Roddick the exit, the French wildcard ended Hewitt's challenge at the Poertschach International.
Roger Federer reached the Monte Carlo Masters final when Serbian Novak Djokovic pulled out of their semi-final.
World number one Roger Federer won his first title of the season at the Estoril Open on Sunday after Russia's Nikolay Davydenko retired with a leg injury.
World number one Roger Federer recovered from a set down to beat unseeded German Denis Gremelmayr 2-6, 7-5, 6-1 on Saturday to reach his first final of the year at the Estoril Open. He will now face the number two seed Nikolay Davydenko of Russia, who beat France's Florent Serra 6-2, 6-2 in the other semi-final.
World number one Roger Federer recovered from one set down to beat unseeded German Denis Gremelmayr 2-6, 7-5, 6-1 on Saturday to reach his first final of the year at the Estoril Open.
Serbian teenager Novak Djokovic beat Spanish qualifier Santiago Ventura 6-2, 6-2 to enter the quarterfinals.
Nikolay Davydenko beat weary Argentine Juan Martin del Potro 6-3, 6-4 to claim the ATP World Tour Finals title at the O2 Arena on Sunday. The wiry Russian, who has climbed to sixth in the world this week, produced a faultless display to claim the biggest title of his career and a $1.5 million cheque.
Nikolay Davydenko won the Sony Ericsson title with a 6-4, 6-2 victory over Spain's second-seeded Rafael Nadal.
American sixth seed Andy Roddick will play unseeded Spaniard Feliciano Lopez in the final of the Dubai Championships on Saturday. Roddick overcame third seed Novak Djokovic of Serbia 7-6, 6-3 while Lopez recovered from 2-5 in the final set to beat fifth-seeded Russian Nikolay Davydenko 6-4, 4-6, 7-5.
Fifth seed Nikolay Davydenko beat Briton Andy Murray 7-5 6-4 to reach the semi-finals of the Dubai Championships on Thursday.
It was fitting that Nikolay Davydenko should get his biggest win of the year on Sunday at a Shanghai Masters tournament dominated by injury retirements and a debate over the length of the season.
Top seed Rafael Nadal was stunned 3-6 6-3 6-4 by Italian Andreas Seppi in one of series of second-round upsets at the World Indoor Tournament on Thursday. Second seed Nikolay Davydenko of Russia, third seeded Spaniard David Ferrer and fifth seed Tomas Berdych of the Czech Republic also suffered early exits.
In other first round matches, at the World Indoor Tournament, second seed Nikolay Davydenko beat qualifier Jan Hernych while David Ferrer advanced with a victory over Italy's Simone Bolelli.
Russia benefited from Novak Djokovic's misfortune to sneak into the quarter-finals of the Davis Cup on Sunday. The Serbian, who had been suffering from flu symptoms over the past week, was leading Nikolay Davydenko 6-4, 6-3, 4-6 in the first reverse singles when he abruptly retired to hand Russia an unbeatable 3-1 lead in the first-round tie in Moscow.
Sweden's Robin Soederling dumped top seed Nikolay Davydenko out of the opening round of the Marseille Open 3-6, 6-4, 6-1 on Wednesday.
Justine Henin and Maria Sharapova set up an explosive Australian Open quarter-final with crushing wins.
The Chilean produced a dazzling display to reach the semi-finals of a Grand Slam for the first time.
Unseeded Swiss Stanislas Wawrinka knocked out defending champion Ivan Ljubicic of Croatia 7-6, 6-4 to reach the Qatar Open final.
While Mauresmo and Davydenko made their exits, former Australian Open finalists Kim Clijsters and Marcos Baghdatis signalled their intentions with impressive victories.
Top seed Nikolay Davydenko of Russia and second-seeded Croatian Ivan Ljubicic progressed into the second round of the $1 million Qatar Open in contrasting fashions on Tuesday.
Puerta stood in for Spain's Rafael Nadal, who withdrew from the Shanghai event earlier in the day with an ankle injury.
Bob and Mike Bryan crushed Russians Nikolay Davydenko and Igor Andreev 7-6, 6-4, 6-2 to give the Americans an unbeatable 3-0 lead in the best-of-five match final.
Russian Nikolay Davydenko clinched his first title of the season on Sunday when he crushed Frenchman Paul-Henri Mathieu 6-4, 6-2 to win the German Open.
Russian Nikolay Davydenko's 6-4, 6-3 victory over Chile's Fernando Gonzalez was enough to send Federer through in the Masters Cup. The world number one then destroyed Andy Roddick 6-4, 6-2.
The Swiss beat Nikolay Davydenko 6-4, 6-3 to stay alive in the Tennis Masters Cup in Shanghai, while American Andy Roddick became the first player to book a semi-final spot at the season-ending event in Shanghai after crushing Chile's Fernando Gonzalez 6-1, 6-4.
Russian Nikolay Davydenko has won his appeal against a fine for not trying hard enough during a match.
The Russian received a warning from the umpire for not trying hard enough during his loss to Croatian qualifier Marin Cilic at the St Petersburg Open.
Top seed Nikolay Davydenko tumbled out of the St Petersburg Open in the second round, going down to Croatian qualifier Marin Cilic.
Croat Ivo Karlovic beat Marat Safin 6-3, 6-4 in the first round of the Madrid Masters.
Russia's Elena Dementieva gave herself an early birthday present when she rallied after dropping the first set to beat Serena Williams 5-7 6-1 6-1 and win her maiden Kremlin Cup title on Sunday.
World No 7 Fernando Gonzalez stayed on course for his first title of the year a quarter-final victory over South Korea's Lee Hyung-taik at the China Open.
The Russian lost 6-3, 6-4 to Croatia's Marin Cilic in the second round of the China Open.
Both won their semi-finals at the US open in straight sets, beating Nikolay Davydenko and David Ferrer respectively.
Roger Federer is poised to write more tennis history at the U.S. Open this weekend against semi-final opponent Nikolay Davydenko at the National Tennis Center.
Marat Safin has withdrawn from the Russia team for the Davis Cup quarter-final against France with a knee injury
top seed Tommy Robredo lost his opening match at the Swedish Open on Monday to Peruvian Luis Horna.