The decision by the 36-year-old Swiss, who was stunned in the final of last year's Rogers Cup in Montreal by German Alexander Zverev, comes less than two weeks after his quarter-final loss at Wimbledon.
Third seed Stanislas Wawrinka became the latest high-profile casualty at the Italian Open on Thursday when the Swiss was knocked out in the third round by American John Isner.
Davis Cup holders Britain edged into a 2-1 lead in Serbia after Jamie Murray and Dominic Inglot won Saturday's doubles.
Venus Williams said she was 'overjoyed' that Wimbledon organisers gave women the spotlight on the tournament's main showcourts on Wednesday.
World number three Roger Federer is playing his first tournament on clay for three years as he prepares for the French Open.
Novak Djokovic boosted his chances of playing at Wimbledon after he accepted a wildcard to compete at next week's Fever-Tree Championships at Queen's Club, tournament organisers said on Monday.
Big-serving Czech Karolina Pliskova cruised into the semi-finals of the BNP Paribas Open with a 6-3, 6-2 victory over Russian teenager Darya Kasatkina on Thursday.
Defending champion Rafael Nadal thrashed Austrian fifth seed Dominic Thiem 6-0, 6-2 to reach the semi-finals of the Monte Carlo Masters for a record 14th time on Friday.
Novak Djokovic beat Daniil Medvedev in the US Open final to win a 24th Grand Slam singles title and equal Margaret Court's record haul.
Novak Djokovic overcame a battling Marin Cilic 6-4, 3-6, 6-3 to reach his sixth Cincinnati Masters final on Saturday while Roger Federer enjoyed a less-taxing route to the title match after his semi-final opponent David Goffin retired with a shoulder injury.
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.
'Tired' Kei Nishikori takes positives out of Open despite loss.
Olympic tennis champion Andy Murray said he is playing the best tennis of his career at the moment and is confident of clinching his second US Open title, starting later this month.
Roger Federer savoured the latest chapter of a late-career fairytale that delivered a sixth Australian Open crown on Sunday and a very 'special' 20th Grand Slam title.
Indian Aces, comprising heavyweights Roger Federer and retired Pete Sampras, pummeled Singapore Slammers 26-16 for their second straight victory in the IPTL.
Wimbledon finalists Novak Djokovic and Roger Federer are on a semi-final collision course at the US Open after they were placed in the same half of the draw.
Having Lendl, as I said, can only serve him as an incentive for an improvement, says Djokovic
The Wimbledon Championship runner-up is expected to be a top draw at the ATP 250 event to be played at the Mhalunge Balewadi Stadium in Pune.
After all, he has been champion there twice, is bang in form after a record-stretching 12th French Open, is injury free and last year was a whisker away from reaching the final.
A summary of sports events and sports persons, who made news on Tuesday
Top seed Roger Federer will challenge for a ninth Halle Open title after reaching the Wimbledon warm-up event final with a 6-4 7-6(5) victory over rising Russian talent Karen Khachanov on Saturday.
Defending champion Serena Williams is the top seed in the women's draw. The American will be looking to equal Steffi Graf's Open era record by sealing a 22nd Grand Slam triumph.
IMAGES from matches on Day 9 at the French Open at Roland Garros
We bring you five achievers who are proof that 35 is the new 25.
24th seed American Sam Querrey caused the biggest upset at this year's Wimbledon as he stunned defending champion Andy Murray 3-6, 6-4, 6-7 (4), 6-1, 6-1, in the quarter-finals, on Wednesday.
Indian Aces notched up their third win on the trot with a 28-20 victory over UAE Royals in the battle of two unbeaten sides in an India Premier Tennis League match in Manila.
Will it be Rafa versus Djoko in Sunday's final?
Nothing that has happened in the past 12 months suggests Roger Federer's hunger is diminished with victory at this year's Australian Open taking his Grand Slam title haul to 20.
World number one Novak Djokovic has pulled out of the Indian Premier Tennis League (IPTL), commencing from Wednesday, citing fatigue, and he has been replaced by Andy Murray and Stan Wawrinka in his team- OUE Singapore Slammers.
Former world number one Maria Sharapova eased past defending champion Peng Shuai 6-3, 6-1 at the Tianjin Open on Saturday to reach her first WTA final in almost two and a half years.
Beaten twice by Nadal in the space of a month, in the Barcelona and Madrid Open finals, Thiem took his revenge by handing the 30-year-old Spaniard a first clay court defeat of the season in Rome.
'Yes, I fall over, but grass sometimes is slippery. Nothing happens. I am good, yeah. Nothing'
Images from Day 9 of the French Open in Paris on Monday.
Order of play on the main show courts at the French Open.
Defending champions Rohan Bopanna and Jeevan Nedunchezhiyan were ousted from the Tata Open Maharashtra but Yuki Bhambri and Divij Sharan combined to shock the top seeds, keeping the Indian hopes alive, in Pune, on Thursday.
Wimbledon champions and World No 1s Novak Djokovic and Serena Williams head the field for the men's and women's events at this year's US Open.
Djokovic has not reached the last eight of a tournament since last year's Wimbledon and has struggled with a long-term elbow injury.
Second seed Dominic Thiem celebrated his 27th birthday with a commanding 6-3, 6-3, 6-2 victory over India's Sumit Nagal on Thursday to move into the third round of the US Open.
Japan's Nishikori was the first man representing an Asian country to break through to a Grand Slam final at the 2014 tournament before Marin Cilic stopped him in the title match.
Top seed Rafael Nadal pulled out of this week's Mexican Open in Acapulco after aggravating the leg injury that forced him out of the Australian Open last month.