Top seed Andy Murray reached the St Petersburg Open semi-finals with a 7-6, 7-5 win over Serbia's Janko Tipsarevic on Friday. In Saturday's semi-final, he will face third-seeded Spaniard Fernando Verdasco, whom he soundly beat in last year's final.
Sania Mirza bowed out of the Australian Open after a 6-7, 4-6 loss to Venus Williams in the third round.
Former French Open champions Gustavo Kuerten and Carlos Moya slumped to first-round defeats at the Monte Carlo Masters.
Britain's Andy Murray and Russia's Mikhail Youzhny became the latest seeds to fall in the Kremlin Cup when they lost to lower-ranked opponents in the second round on Thursday.
Juan Carlos Ferrero ventured into uncharted territory at Wimbledon on Tuesday when he beat Serbia's Janko Tipsarevic 7-5, 6-3, 7-6.
They went down 1-6, 4-6 to Hanley and Ullyet in the Artois Championship.
The world No. 1 made it three out of three wins on Sunday to give the Swiss a decisive 3-1 lead over Serbia.
A back injury forced Lleyton Hewitt to withdraw from the Miami Masters before his second-round match.
The Indian Davis Cupper lost 2-6, 4-6 to Janko Tipsarevic in the final of the Bukhara Challenger.
World number one Roger Federer suffered a stunning 7-5, 6-2 upset defeat by Argentine Guillermo Canas in the Pacific Life Open second round on Sunday.
Sania Mirza and Leander Paes advanced to the second round of the doubles events with their respective partners at Wimbledon
Paes and Damm beat Novak Djokovic and Janko Tipsarevic of Serbia 7-6 (6), 4-6, 6-3 at the Australian Open on Thursday.
The seventh seeds were subdued 6-1, 7-6 (4) by Janko Tipsarevic and Mikhail Youzhny
World No 1 Novak Djokovic during his semifinal match against Jeremy Chardy at the Rogers Cup on Saturday, complained to the umpire that someone's cigarettes were making him dizzy.
They were beaten by Frederic Niemeyer of Canada and Glenn Weiner of the US in the first round at Wimbledon.
The Russian former world No 1 was beaten in the second round by Serbia's Janko Tipsarevic.
Former French Open champions Argentine Gaston Gaudio and Spaniards Carlos Moya and Albert Costa have all pulled out of Wimbledon because of injury.
Third seed Rainer Schuettler of Germany was the first casualty at the ATP Chennai Open.
World No 1 Novak Djokovic will miss Serbia's Davis Cup World Group playoff tie against India in Bangalore next weekend, the Balkan nation's coach Bogdan Obradovic said on Monday.
'He can say what he wants, I don't have a problem with it. Does he show me the same amount of respect that most other players do? No, he doesn't, but that's the way he communicates these days'
Spain's third seed Roberto Bautista Agut made a smooth entry into the men's quarter-finals at the ATP Chennai Open tennis tournament with a fluent 6-3, 6-2 win over German Peter Gojowczyk.
Holders Czech Republic took a 2-1 lead over hosts Serbia in the Davis Cup final after Tomas Berdych and Radek Stepanek romped to a 6-2, 6-4, 7-6(4) win over Nenad Zimonjic and Ilija Bozoljac in Saturday's doubles.
Roared on by 17,000 partisan fans Novak Djokovic fired Serbia ahead in the Davis Cup final on Friday but Tomas Berdych hit back for the Czech Republic to leave the tie delicately poised going into the weekend.
India's top singles tennis player Somdev Devvarman has been handed a direct entry in the main draw of the ATP Chennai Open tennis tournament after Estonia's Jurgen Zopp pulled out of the event due to a back injury.
It would have been great for Indian tennis had Novak Djokovic decided to turn up in this week's Davis Cup tie in Bangalore, country's leading singles star Somdev Devvarman said.
India face one of the most ferocious Davis Cup challenges at home as nothing less than their best would be required to challenge world number two Serbia, who will test skill and strength of the hosts even without world number one Novak Djokovic in Bangalore from Friday.
Daniel Nestor and Vasek Pospisil subdued Nenad Zimonjic and Ilija Bozoljac 6-7(6), 6-4, 3-6, 7-6 (5), 10-8 in a rip-roaring doubles on Saturday to give Canada a 2-1 lead against 2010 winners Serbia in their Davis Cup semi-final.
The iconic Leander Paes has ruled out immediate retirement from the competitive tennis, saying his comments were misconstrued and he actually aims to capture another Chennai Open trophy next year and motivate his new partner to win his maiden Grand Slam title. Paes and Brazilian Andre Sa began the 2017 season with a defeat against Indian team of Purav Raja and Divij Sharan in the opening round on Wednesday night.
Serbia's Novak Djokovic is the top seed in the men's draw which includes five-times US Open champion and 17-times Grand Slam winner Roger Federer as seventh seed - his first time the Swiss has been placed outside the top three in a Grand Slam in over ten years.
Somdev Devvarman would be India's while Yuki Bhambri is expected to carry his good from into the new season which is full of new challenges for the Indian players as ATP Aircel Chennai Open begins on Monday.
Federer said the rate of dropouts would fall if the slams switched to best-of-three-sets rather than best-of-five as it would mean matches were more like "a sprint to the finish line" rather than being "a marathon" but the people he really felt sorry for on Tuesday were the fans.
Images from Day 1 of the Wimbledon Championships.
Images from the second day's play of the 2016 French Open at the Roland Garros
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 World number 14 subdued the young Russian 6-3, 6-4 to capture his fifth ATP singles title.
Yuki Bhambri became only the third Indian to reach the singles quarter-finals of an ATP World Tour event at home after winning his second round against an unfit world number 16 Fabio Fognini even as Ramkumar Ramanathan's fairytale run came to an end in Chennai on Thursday.
The Czech Republic retained their Davis Cup title after Radek Stepanek ruthlessly exploited the inexperience of Dusan Lajovic in the decisive rubber to seal a 3-2 final victory over Novak Djokovic's Serbia on Sunday.
The winners of the season's first three grand slams Novak Djokovic, Andy Murray and Rafa Nadal put on a masterclass at the Western and Southern Open on Wednesday, strolling into the third round with straight sets wins.
Top seed Stanislas Wawrinka scored a clinical 6-3, 6-1 win over Benjamin Becker to progress to the quarter-finals of the ATP Chennai Open even as second seed Michael Youzhny conceded his singles match in yet another the player pull out in Chennai.
Home sensation and wild card entrant Yuki Bhambri sprung a surprise by upsetting higher-rated Pablo Carreno Busta of Spain to enter the second round even as compatriot Somdev Devvarman made a shocking first round exit at the ATP Chennai Open.