Polish qualifier Jerzy Janowicz continued his brilliant run at the Paris Masters on Friday while fourth seed David Ferrer knocked out local favourite Jo-Wilfried Tsonga.
Novak Djokovic's frustration with the controversial blue clay at the Madrid Masters reached new heights after the world number one was beaten 7-6, 6-3 by fellow-Serb Janko Tipsarevic in the quarter-finals on Friday.
World number one Novak Djokovic beat fellow-Serb Janko Tipsarevic 6-1, 7-6 in the quarter-finals of the Dubai Tennis Championships on Thursday to set up a meeting with Andy Murray in the last four.
A year that began with a 41-match winning streak, included three grand slam titles and saw him knock Rafa Nadal off his perch ended in tame fashion for a "drained" Novak Djokovic when he made an early exit from the ATP World Tour Finals, on Friday.
Spain's David Ferrer stunned World No. 1 Novak Djokovic to reach the ATP World Tour semi-finals on Wednesday, outplaying the Serb 6-3, 6-1 at the O2 Arena.
The Indian duo of Leander Paes and Mahesh Bhupathi will take on the winner of the match between Serbs Janko Tipsarevic-Viktor Troicki and the Spanish combo of Marc Lopez-Rafael Nadal in the second round of the ATP Western and Southern Open in Cincinnati.
Somdev Devvarman progressed to the singles quarter-finals of the ATP South Africa Tennis Open with a straight sets win over giant killer Jesse Huta Galung in Johannesburg, on Wednesday.
Former US Open champion Andy Roddick stumbled to a bad-tempered early exit from his home Grand Slam on Wednesday, the American losing 3-6, 7-5, 6-3, 7-6 to unseeded Serb Janko Tipsarevic in the final match of the day.
Roger Federer will have seen it all before when he takes on Alejandro Falla in his second round match at the French Open on Wednesday.
Novak Djokovic recovered from a set down to defeat fellow Serb Viktor Troicki 3-6, 6-4, 6-2 in the second round of the Dubai Championships on Wednesday, while India's Somdev Devvarman lost to Cypriot Marcos Baghdatis.
The early exit from Chennai Open cost Somdev Devvarman 35 places as the wiry Indian dropped to 161 in the latest ATP singles ranking issued on Monday.
Novak Djokovic was left sweating on a place in the semi-finals of the ATP World Tour Finals on Friday after losing for the first time in his career to fellow-Serb Janko Tipsarevic.
Novak Djokovic ran into a spot of bother before seeing off Davis Cup team mate Viktor Troicki 4-6, 6-3, 6-1 to secure his place in the quarter-finals of the Paris Masters on Thursday. Czech Tomas Berdych booked his place for the ATP World Tour Finals with a 7-5, 6-4 win over Serb Janko Tipsarevic.
Former French Open champions Gustavo Kuerten and Carlos Moya slumped to first-round defeats at the Monte Carlo Masters.
Mikhail Youzhny made a shock first-round exit at the World Indoor Tournament, losing to unseeded Serb Janko Tipsarevic.
Britain's Andy Murray and Russia's Mikhail Youzhny became the latest seeds to fall in the Kremlin Cup when they lost to lower-ranked opponents in the second round on Thursday.
A back injury forced Lleyton Hewitt to withdraw from the Miami Masters before his second-round match.
World number one Roger Federer suffered a stunning 7-5, 6-2 upset defeat by Argentine Guillermo Canas in the Pacific Life Open second round on Sunday.
Roger Federer scrambled to a 6-7, 7-6, 5-7, 6-1, 10-8 third-round victory over Serb Janko Tipsarevic.