Britain's Jamie Murray and Brazil's Bruno Soares will end the year as the top-ranked doubles duo after French pair Nicolas Mahut and Pierre-Hugues Herbert lost at the ATP World Tour Finals on Friday.
The victory saw him move up by three places to stand only behind Spain's Rafael Nadal and Swiss star Roger Federer.
Jo-Wilfried Tsonga started his quest for an ATP World Tour final spot with a 6-2, 4-6, 7-6 second-round victory over fellow Frenchman Julien Benneteau at the Paris Masters on Tuesday.
Roger Federer won the inaugural Istanbul Open on Sunday, beating third seed Pablo Cuevas 6-3, 7-6 (11) for his first clay title in three years.
Dimitrov has enjoyed the best season of his career in 2017, clinching four titles overall, including his first Masters title in Cincinnati.
Briton Andy Murray will take over from Novak Djokovic as World No 1 when the rankings are updated on Monday after his Paris Masters semi-final opponent Milos Raonic withdrew with a leg injury on Saturday.
No clear favourite for Australian Open, says Djokovic
Following is a list of the previous matches between Switzerland's Roger Federer and Spain's Rafael Nadal ahead of their meeting in the title decider at the Australian Open on Sunday
Leander Paes won his second Challenger level title of the season, lifting the Santo Domingo Open trophy with partner Miguel Angel Reyyes-Varela.
Bopanna lost just four points on his serve during the entire match as the top seeded Indians produced a dominating 6-3, 6-4 win over British pair of Luke Bambridge and Jonny O'Maara.
Japan's Kei Nishikori made a stunning start to what will surely be the first of many appearances at the ATP World Tour Finals with a 6-4, 6-4 win over home favourite Andy Murray on Sunday.
On Sunday the Ukrainian Tennis Federation urged the sport's governing body the International Tennis Federation (ITF) to immediately expel Russia and Belarus from the organisation and ban Russia from team and individual tournaments. Also, athletes from Ukraine and other nations have called on the International Olympic Committee (IOC) to suspend Russia and Belarus and ban their athletes from events immediately.
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.
The world number one was virtually guaranteed a semi-final berth before walking on court at the O2 Arena, but made doubly sure by cruising past Tomas Berdych in little more than an hour.
Japan's Kei Nishikori dispatched error-strewn Swiss Stan Wawrinka 6-2, 6-3 in a disappointingly one-sided clash at the ATP World Tour Finals on Monday.
Japan's Kei Nishikori surged to a three-set victory over alternate David Ferrer at the ATP World Tour Finals on Thursday before sitting back to watch his fate unfold in the night match.
Rafael Nadal produced one of his best performances of the year to beat Andy Murray 6-4, 6-1 at the ATP World Tour Finals and move within sight of the semi-finals on Wednesday.
Indian tennis star Rohan Bopanna and Pakistan's Aisam-ul-Haq Qureshi have decided to reunite for the 2014 season.
The Briton, who was playing fairly before the mid-match trim, slumped to a defeat against Nadal in their Round Robin match in the ATP Tour Finals on Wednesday.
World No 8 Switzerland's Stanislas Wawrinka confirmed, on Monday, his participation in the 19th edition of the Aircel Chennai Open, India's only ATP World Tour tennis event, starting December 30.
A mouthwatering finale to the season ended before it even began on Sunday when Roger Federer was forced to pull out prior to the ATP World Tour Final showdown with Novak Djokovic.
It has now come to light that Federer's wife Mirka is at the centre of this now infamous row between the seventeen-time Grand Slam champion and the 2014 Australian Open champion.
World No 3 Roger Federer has delayed his ATP World Tour return by a month and plans to make his comeback from knee surgery at the Monte Carlo Masters in April.
The victory over the 19-times Grand Slam champion was the second ATP World Tour Masters 1000 title of the season for the 20-year-old German, who also beat Novak Djokovic in Rome.
The 32-year-old world number 18 still had a remote chance of qualifying for the season-ending ATP World Tour Finals for an eighth time.
Twenty-times Grand Slam champion Federer has said that he is unlikely to play in the new-look tournament, spearheaded by Barcelona player Pique's investment group Kosmos.
Andy Murray put down an early warning for the Davis Cup final when he dismantled David Goffin 6-1, 6-0 in awe-inspiring fashion to reach the quarter-finals of the Paris Masters on Thursday.
Tomas Berdych rebounded from an opening defeat to revive his hopes at the ATP World Tour Finals by demolishing Croatia's Marin Cilic at the O2 Arena on Wednesday.
Ace British tennis player Andy Murray ended his 2016 campaign on a perfect note after defeating Novak Djokovic in straights in the summit clash of the ATP World Tour Finals, assuming the mantle of year-end No. 1 in the Emirates ATP Rankings. Murray dethroned Djokovic 6-3, 6-4 in a contest that lasted for an hour and 43 minutes to earn his first title at the ATP finals and make sure he remained No. 1 until next season. Rediff.com takes a look at the hosts of celebrities from footballers, tennis champions and Hollywood stars, who attended this big clash.
Novak Djokovic equalled Roger Federer's all-time record for most weeks as ATP world number one
Spain's Tommy Robredo shocked world number one Novak Djokovic 7-6(6), 7-5 on Thursday to move into the quarter-finals of the Western and Southern Open in Cincinnati.
Rafael Nadal's hopes of winning the year-ending ATP Finals for the first time live on after the Spaniard beat defending champion Stefanos Tsitsipas 6-4, 4-6, 6-2 on Thursday.
There was also the exciting Rugby Union match that added that much more excitement to the past week. Rediff.com has that and more snapped right here. We bring you a glance of all the action from the week gone by
Canada's Milos Raonic boosted his chances of qualifying for the lucrative ATP World Tour Finals after capturing his first title of the season with a 6-3, 3-6, 6-3 win over Portugal's Joao Sousa in the final of the St. Petersburg Open on Sunday.
Rohan Bopanna and his doubles partner Florin Mergea qualified for the year-end ATP World Tour Finale when Vasek Pospisil and Jack Sock lost the Paris Masters final, on Sunday.
The third-seeded Indo-Kiwi combination prevailed 6-4, 5-7, 14-12 over the Australian-Swede combine of Matthew Ebden and Robert Lindsted, in the quarter-finals after saving three match points.
The Association of Tennis Professionals (ATP) has decided to increase the overall prize amount for the men's tennis tours, exceeding 100 million dollars for the first time in 2015.
Ramkumar became the first Indian in seven years to advance to the singles final of an ATP World Tour event but missed out on ending India's 20-year title drought when he lost the Hall of Fame final to Steven Johnson on Sunday night.
World No 5 Kei Nishikori has withdrawn from this week's Shanghai Rolex Masters due to an injury to his left gluteal muscle.