Roger Federer gave a cautious thumbs up on Sunday to the ATP's decision to shorten the men's calendar by two weeks from 2012.
In the earlier match, Zverev beat Cilic -- the Croat's 9th loss in 10-round robin matches in the Finals
Indian challenge ended at the ATP Rogers Cup as Rohan Bopanna and his Pakistani partner Aisam-ul-haq Qureshi conceded their doubles quarter-final match to top seeds Mike and Bob Bryan due to an injury to the Indian Davis Cupper.
India's first and only tennis medal in the history of Olympic Games came way back in 1996, when Leander Paes claimed the singles bronze in Atlanta.
Top seed Stanislas Wawrinka lifted his fifth ATP World Tour title and second Chennai Open trophy after a convincing straight sets win over Edouard Roger-Vasselin in the final on Sunday.
The Serb set up the breakaway PTPA on the eve of the US Open in September and resigned as head of the player council but last month he confirmed that he had been nominated by his fellow professionals for the current elections which he accepted.
Stefanos Tsitsipas confirmed his meteoric rise into the highest echelon of men's tennis by battling back to beat Austrian Dominic Thiem 6-7(6) 6-2 7-6(4) in a compelling title duel at the ATP Finals on Sunday.
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.
Mahesh Bhupathi is the lone Indian survivor at the ATP Rogers Cup as Somdev Devvarman, Leander Paes and Rohan Bopanna crashed out of the Masters Series event following defeats in their respective draws.
The Spaniard's main rival, Roger Federer, picked the Stefan Edberg Sportsmanship prize for a record fifth successive year.
Mahesh Bhupathi and Martin Damm lost 3-6, 6-7 (7-9) against Kevin Ullyett and Wayne Black in the quarterfinals in Montreal
Not that cash will be the motivator for world number one Novak Djokovic, Rafa Nadal, Dominic Thiem, Tsitsipas, Daniil Medvedev, Alexander Zverev and debutants Andrey Rublev and Diego Schwartzman when the tournament's 50th edition starts on Sunday.
Roger Federer has pulled out of the Rio Olympics and said he will miss the rest of the season as he needs "more extensive rehabilitation" following knee surgery earlier this year if he wants to prolong his career.
Grigor Dimitrov claimed the biggest title of his career and sent out a huge statement of intent as the stylish Bulgarian beat David Goffin 7-5, 4-6, 6-3 to win the ATP Finals.
Summary of sports events and persons who made news on Saturday
Summary of sports events and persons who made news on Tuesday
Italian Bracciali banned for life, Starace for 10 years
Tabilo broke the top seed four times on Centre Court while not conceding a single break point.
Leander Paes and his Czech partner Lukas Dlouhy prevailed over Mahesh Bhupathi and Mark Knowles in the super tie-breaker to breeze into the doubles semi-finals of the US $ 2,615,000 ATP Rogers Masters in Toronto. Paes-Dlouhy, seeded seventh edged past fourth seeded Bhupathi-Knowles 6-4, 3-6, 10-5 in one hour and 15 minutes in the quarter-finals of the hard court event.
The fourth seeded Indo-Bahamas pair got a walkover from the American duo of Mardy Fish and Andy Roddick in the second round of the ATP Rogers Masters.
Ronaldo got involved in ball kid duties while watching world number one Novak Djokovic's opening match against John Isner of America as the tennis ball bounced into the stands near the first row where he was sitting.
Britain's Andy Murray joined world number one Novak Djokovic and newly-crowned US Open champion Rafa Nadal as definite qualifiers for the ATP World Tour finals on Tuesday, but Roger Federer faces an uphill task to make the eight-man field.
Rohan Bopanna and his Australian partner Matthew Ebden lost to Russian pair of Andrey Rublev and Karen Khachanov.
Roger Federer has secured his place in the ATP Finals for a record 15th time after the Swiss world number three won a record eighth Wimbledon title on Sunday, the Association of Tennis Professionals confirmed on Monday.
Andy Murray's illustrious career finally came to an end as he and doubles partner Dan Evans were beaten 6-2, 6-4 by American pair Taylor Fritz and Tommy Paul in the Olympics quarter-finals at Roland Garros on Thursday.
World No 1 Rafael Nadal, who is hoping to recover from a knee injury to play in the season-ending showpiece, heads the other group and will face Belgian David Goffin, Bulgarian debutant Grigor Dimitrov and Austrian Dominic Thiem.
Stuns World No 1 Djokovic to win 'biggest title of career'
Having dug in early on to stay with Federer, Nishikori ended up running away with the match to inflict a first straight sets defeat in the ATP Finals round-robin stages on the 20-time Grand Slam champion.
Roger Federer rediscovered his verve in the nick of time to outclass Austrian Dominic Thiem 6-2, 6-3, on Tuesday, and maintain his hopes of reaching the last four at the ATP Finals.
Third seeds Mahesh Bhupathi and Mark Knowles edged past Jeff Coetzee and Jurgen Melzer 7-6(2), 6-4 to book a quarter-final berth in the Rogers Cup, an ATP Masters 1000 tournament in Montreal. The Indo-Bahamian pair had to battle for one hour and 27 minutes to dispatch a fighting South African-Austrian pair in the second round on Wednesday night.
Serena Williams and Naomi Osaka advanced to the Rogers Cup quarter-finals on Thursday to set up their first meeting since the American's infamous row with an umpire overshadowed last year's US Open final.
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
The 26-year-old has not always handled the expectations placed on his shoulders after he won the Wimbledon junior title in 2008 with a game style uncannily like Federer's.
American twins Bob and Mike Bryan underlined their status as the best doubles pair in the world as they claimed the ATP Tour Finals title for the fourth time on Sunday.
Factbox on Carlos Alcaraz, who beat seven-time champion Novak Djokovic
Djokovic's sixth trophy this season helped him to extend his lead over the second-ranked Carlos Alcaraz in the race to the year-end number one spot
Belgian Goffin, thrashed by Grigor Dimitrov two days ago, appeared to be feeling the effects of that mauling as he went 3-0 down with a whimper, but came alive to win 15 points in a row during a first-set comeback.
Switzerland's Roger Federer, who has been hampered by back problems, has been named to play in the second singles rubber of the Davis Cup final against France's Gael Monfils on Friday, organisers announced on Thursday.
Tsitsipas had lost all five previous matches against the Russian, but turned the tables in impressive fashion.
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.