India's Mahesh Bhupathi on Monday advanced to the second round of the ATP World Tours Finals after he and his partner Max Mirnyi defeated Lukasz Kubot and Oliver Marach in straight sets at London.
Novak Djokovic's tremendous run of form since the start of the year means the Serb has already booked his spot at the ATP World Tour finals in London.
Mahesh Bhupathi and Rohan Bopanna saved a match point to breeze into the title clash of the ATP World Tour finale after defeating Leander Paes and Radek Stepanek via Super tie-breaker, in London on Sunday.
With Federer certain, young Austrian Dominic Thiem is third in the ATP race to London, followed by Stan Wawrinka, Alexander Zverev, Djokovic, world number one Andy Murray, and Belgium's David Goffin.
Novak Djokovic began his challenge for a hat-trick of ATP World Tour Finals triumphs in London with a 6-1, 6-1 demolition of Croatia's Marin Cilic.
The Spaniard bore little resemblance to the player who once terrorised his opponents as he slumped to a 6-1, 7-6 defeat by Russia's Nikolay Davydenko.
Deposed World No 1 Novak Djokovic suffered an early scare against Austrian debutant Dominic Thiem at the ATP World Tour Finals before launching his bid for a fifth successive title with a 6-7(10), 6-0, 6-2 victory.
The Indo-Pakistan tennis duo of Rohan Bopanna and Aisam-ul-Haq Qureshi has booked a berth in the season-ending ATP World Tour Finals to be held from November 20 to 27 at London's O2 arena.
World number one Novak Djokovic will bid for a record fourth successive ATP World Tour Finals crown in London later this year after becoming the first man to qualify for the season-ender.
But apart from the tennis stars there were celebrities from all walks of life in London.
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.
Three-times champion and world number one Novak Djokovic has been drawn in a group with U.S. Open champion Marin Cilic in next week's season-ending ATP World Tour Finals in London.
They have been drawn in Group Ashe-Smith along with John Peers/Jamie Murray and Simone Bolelli/Fabio Fognini.
India's Rohan Bopanna and his Romanian partner Florin Mergea reached the semi-finals of the ATP World Tour Finals with a straight sets win at London's O2 Arena on Tuesday.
Photos from the ATP World Tour Finals matches played in London on Tuesday.
India's Leander Paes and Mahesh Bhupathi suffered a 6-7(6), 1-6 defeat to Sweden's Robert Lindstedt and Horia Tecau of Romania in their first round Group A match of the Barclays ATP World Tour Finals, in London, on Monday.
Rafael Nadal's announcement on Friday that he will miss the ATP World Tour Finals because of appendicitis ended a difficult year for the Spaniard during which he has endured injury, illness and worrying defeats.
Champions Daniel Nestor and Nenad Zimonjic lost all hope of defending their ATP World Tour Finals doubles title on Tuesday when they suffered their second successive round-robin defeat at the O2 Arena.
There is no let-up for Roger Federer as he prepares for his 12th consecutive appearance at the ATP's season-ending extravaganza.
Indian duo of Leander Paes and Mahesh Bhupathi stormed into the semi-finals of the ATP World Tour finals doubles competition after an easy straight-set victory over top seeds and three-time winners Bob and Mike Bryan, in London.
Swede Robin Soderling claimed his second major upset at the ATP World Tour Finals on Wednesday when he beat world number three Novak Djokovic 7-6, 6-1.
Bob and Mike Bryan thrashed French duo Julien Benneteau and Edouard Roger-Vasselin 6-0, 6-3 to reach the final of the ATP World Tour Finals on Saturday.
Rohan Bopanna and his Romanian partner Florin Mergea on Saturday made it to the final of the men's doubles event at the ATP World Tour Finals, in London, after registering a straight-set victory against Croatian Ivan Dodig and Marcelo Melo of Brazil.
Nikolay Davydenko ended seven years of pain against Roger Federer on Saturday, beating the world number one 6-2, 4-6, 7-5 to reach the final of the ATP World Tour Finals for a second successive year.
The Indian pair of Mahesh Bhupathi and Rohan Bopanna squandered two match-points before losing to Jonathan Marray and Frederik Nielsen in their opening match at the ATP World Tour Finals, in London, on Tuesday. The Indians, making their debut as a pair in the elite season-ending event, lost their Group B match 6-4, 7-6(1), 10-12 in 96 minutes.
Roger Federer became the first player to win the ATP World Tour finals six times when he beat France's Jo-Wilfried Tsonga 6-3, 6-7, 6-3 in the final at the O2 on Sunday.
Mahesh Bhupathi and Mark Knowles enhanced their semi-final chances at the ATP World Tour finals after edging past Mariusz Fyrstenberg and Marcin Matkowski in a tough group B encounter in London on Tuesday.
Rohan Bopanna and Aisam-ul-haq Qureshi crashed out of the ATP World Tour Finals after suffering their third consecutive defeat in the event, going down to the Polish duo of Mariusz Fyrstenberg and Marcin Matkowski in their Group B match, in London, on Thursday.
Holder Roger Federer produced an hour of sublime quality to crush Rafa Nadal 6-3, 6-0 at the ATP World Tour Finals on Tuesday and clinch a place in the last four with a match to spare.
Andy Murray crushed Stan Wawrinka 6-4, 6-2 to win his group at the ATP World Tour Finals on Friday and stay on course for a season-ending climax with Novak Djokovic.
Rafael Nadal has booked his place at the World Tour finals after winning a record eighth French Open title, the ATP said on Monday.
For all his renowned mental strength it was psychological exhaustion that made Rafael Nadal consider skipping the season-ending ATP World Tour finals this year, the 14-times grand slam champion said on Tuesday.
Novak Djokovic said his ailing father's struggle with serious illness had inspired him to beat Roger Federer in a thrilling climax to the ATP World Tour Finals on Monday.
Roger Federer sent a timely reminder to Rafael Nadal on Sunday, out-gunning the World No 1 to win the ATP World Tour Finals with an irresistible display of attacking tennis.
Americans Bob and Mike Bryan stood one match away from ending the season ranked on top of the world as they reached the doubles final at the ATP World Tour Finals with a 6-4 6-4 win over Mahesh Bhupathi and Mark Knowles. The second seeds will usurp Daniel Nestor and Nenad Zimonjic as world number ones if they beat Max Mirnyi and Andy Ram in the showpiece match on Sunday.
Defending champion Roger Federer made a winning start at the ATP World Tour Finals with 6-2, 2-6, 6-4 victory in his opening round-robin match against Jo-Wilfried Tsonga at the O2 on Sunday.
Rohan Bopanna and Florin Mergea finished second in Ashe/Smith Group after losing to the Italian pair of Fabio Fognini and Simone Bolleli in their last group match in the ATP World Tour Finals , at the O2 Arena, in London, on Thursday.
US Open champion Andy Murray withstood an early onslaught to beat Tomas Berdych in his first match on home soil since winning his maiden grand slam title and Novak Djokovic overcame Jo-Wilfried Tsonga as the ATP World Tour Finals began on Monday.
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.
Leander Paes and his Czech partner Lukas Dlouhy's chances of making the knockout stage of the ATP World Tour Finals' doubles event suffered a jolt after they were handed a straight-set defeat by debutants Lukasz Kubot and Oliver Marach in their opening Group B match in London on Monday.