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.
The Chilean produced a dazzling display to reach the semi-finals of a Grand Slam for the first time.
top seed Tommy Robredo lost his opening match at the Swedish Open on Monday to Peruvian Luis Horna.
Roger Federer reached a record eighth consecutive Grand Slam final by overcoming Nikolay Davydenko 7-5, 7-6, 7-6.
The unseeded Russian beat Marcos Baghdatis to reach the quarter-finals of a Grand Slam for the first time at the French Open.
The Argentine concluded an ideal warm-up for the French Open with a 7-6, 6-0 win over the Frenchman in the Poertschach International final.
The world number two, whose victory took his winning streak on clay to 75 matches, went through to a semi-final against fourth seed Nikolay Davydenko at the Rome Masters.
The Russian Mikhail Youzhny brushed aside third seed Ivan Ljubicic to win the World Indoor tournament.
The Spaniard acknowledged he will have his work cut out to beat the world number one in Saturday's Masters Cup semi-final.
Russia's Marat Safin knocked out Swede Robin Soderling in a second-round match at the Paris Masters.
The Russian overcame a groin injury to reach her first Kremlin Cup final beating Czech teenager Nicole Vaidisova.
Ivan Ljubicic and Nikolay Davydenko advanced to the quarterfinals of the China Open.
Marat Safin has withdrawn from the Russia team for the Davis Cup quarter-final against France with a knee injury
The world number one battled back from a break down in the final set to fend off the Aussie and reach the final of the Cincinnati Masters.
David Nalbandian thrashed Ivan Ljubicic 6-2, 6-2 to reach the semi-finals of the Masters Cup
Andre Agassi and Rafael Nadal pulled out of the season-ending Masters Cup on Monday
Federer is chasing a third consecutive finale title -- a feat last achieved by Ivan Lendl in 1985-87.
Defending champion Roger Federer was drawn against Guillermo Coria, Ivan Ljubicic and David Nalbandian in the group stages of the Masters Cup.
The 19-year-old will equal Guillermo Vilas's 1977 record of 53 consecutive wins on clay if he retains the Rome Masters title this week.
The Australian Open champion will lead Russia in next month's Davis Cup World Group opening round tie against Chile.
Holders Croatia had to be content with a win and a loss from the opening day's two singles rubbers in the Davis Cup.
The third seeds beat Igor Andreev and Nikolay Davydenko in the second round.
In women's action, comeback queen and former world number one Martina Hingis beat Austria's Sybille Bammer at the Pacific Life Open.
Andre Agassi slumped to a 7-5, 7-5 defeat against Bjorn Phau at the Dubai Open
Roger Federer produced an imperious display to dismiss unseeded German Florian Mayer 6-1, 6-4, 6-0 in the second round
Germany's Tommy Haas beat third seed Nikolay Davydenko 6-3, 2-6, 1-6, 6-1, 7-5 to enter the semi-final.
The Argentine No 1 overpowered Russia's Marat Safin in the second singles after Nikolay Davydenko beat Juan Ignacio Chela.
Roger Federer beat Russian Mikhail Youzhny at the Dubai Open on Saturday.
The top seed beat Mariano Puerta in 72 minutes to set up a semi-final with France's Paul-Henri Mathieu in the Montreal Masters.
The Spaniard beat Tomas Zib 6-2, 6-1 to register his 32nd successive win on clay.
The top seeds beat third seed Zimbabwean pair of Wayne Black and Kevin Ullyett 6-3, 7-5 to win the men's doubles title.
The World number one won his 20th consecutive match on Friday as he breezed past Russian Nikolay Davydenko 6-3, 6-4.