Third seed Stan Wawrinka was knocked out in the third round of the Paris Masters when he lost 6-7(2), 7-5, 7-6(3) against South African Kevin Anderson on Thursday, suffering his fourth defeat in five matches.
Novak Djokovic and Roger Federer notched up contrasting victories to reach the Shanghai Masters quarter-finals on Thursday while David Ferrer fought back from a set down to knock out Andy Murray.
Third seed Stan Wawrinka was sent packing in the round of 16 at the BNP Paribas Open in California on Wednesday and was very nearly joined by Rafael Nadal, who pulled off a Houdini-like escape to reach the last eight.
Seven years after their first Grand Slam final meeting, Novak Djokovic and Roger Federer stand on the verge of a third showdown at the highest level.
Roger Federer rolled back the years to beat Novak Djokovic 3-6, 6-3, 6-2 in the semi-finals of the Dubai Championship on Friday, his first victory in four meetings with the world number two.
India ended its campaign at the Fed Cup with a fourth place finish after losing the classification tie 1-2 to Korea as the team badly missed injured Karman Kaur Thandi, who did not play on Saturday, in Astana, Kazakhstan.
Photos from the ATP World Tour Finals matches played in London on Tuesday.
Rafael Nadal slumped to one of his worst defeats in a clay final on Sunday but said his week in Madrid had been positive despite losing his Masters crown to Andy Murray in a crushing 6-3, 6-2 reverse.
Leonardo Mayer beat Joao Souza in a Davis Cup singles match that lasted a record six hours and 42 minutes.
Rafael Nadal continued his perfect run on the North American hardcourts taming Czech Tomas Berdych 7-5, 7-6 (4) at the Western and Southern Open on Saturday to setup a final showdown with big-hitting American John Isner.
A summary of sports events and sports persons, who made news on Sunday
Eugenie Bouchard's mid-season nosedive continued on Tuesday as the Canadian was swept aside 6-3 6-4 by Croatian qualifier Donna Vekic despite having home advantage and the backing of an excited crowd in a first round clash at the Rogers Cup.
Fifth seed Maria Sharapova averted an early exit on a sweltering day in Flushing Meadows. Updates from Wednesday's play.
Iron-willed Czech Tomas Berdych ended eight years of tyranny under nemesis Rafa Nadal to storm into the Australian Open semi-finals on Tuesday before his next opponent Andy Murray restored British colonial rule to the floodlit centre court.
A season that produced the biggest shake-up in men's tennis for more than a decade draws to a close next week with three ATP World Tour Finals debutants striving to sign off breakthrough years with a large exclamation mark.
A misfiring Rafael Nadal had trouble hitting the mark but the third seeded Spaniard still had enough to beat American Donald Young 6-4, 6-2 on Tuesday and advance to the fourth round of the BNP Paribas Open.
The recall of a crushing loss might not have the same attraction as the memory of an inspired victory for most top tennis players, but World No 8 Stanislas Wawrinka wears failure as a badge of honour stamped permanently on his arm.
Federer, who skipped the entire clay court season after winning the Australian Open and claiming titles at Indian Wells and Miami this year, will next play defending champion Florian Mayer who beat Frenchman Lucas Pouille in three sets.
Nadal, who got a first-round bye, defeated Richard Gasquet 6-3, 6-4 to advance.
India's Leander Paes and his German partner Alexander Zverev went down to the Spanish duo of Feliciano Lopez and Marc Lopez in a men's doubles first round match to bow out of the Cincinnati Open.
Murray had battled his way back from two sets down in the second round against France's Adrian Mannarino, but could not work another miracle against the 14th-ranked, 29-year-old Anderson, who swept the final tiebreak 7-0.
PHOTOS from day four of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Thursday.
It was a day of surprises at Flushing Meadows in New York as seeded players were knocked out one after the other on Friday.
US Open champions Marin Cilic and Serena Williams kicked off their China Open campaigns with straight sets victories against battling underdogs on Monday, but Rafael Nadal suffered defeat in a rare doubles outing on his return from injury.