Leander Paes and Stanislas Wawrinka shocked 2014 Wimbledon champions Vasek Pospisil and Jack Sock 7-6(4), 3-6, 10-3 to make it to the doubles quarter-finals at the ATP Masters Western and Southern Open, in Cincinnati, on Tuesday.
Djokovic says Peng situation horrifying, says tennis must unite.
A round-up of all the tennis action from around the globe.
Rohan Bopanna and Prakash Amritraj crashed out in their respective men's singles semi-final matches at ATP Challenger Series tournaments being simultaneously played in England and the United States.
World number one Novak Djokovic had to work hard for a three-set victory over Hungarian Marton Fucsovics at the Paris Masters on Tuesday in his first match since losing the U.S. Open final in September.
American teenage sensation Coco Gauff progressed to her maiden WTA final as she eased past Germany's Andrea Petkovic 6-4, 6-4 at the Linz Open on Saturday. The 15-year-old Gauff became the youngest player to reach a WTA final since Czech Republic's Nicole Vaidisova won the Tashkent Open in 2004, also aged 15.
World No 1 Novak Djokovic maintained his perfect tournament record and advanced to his fifth China Open final with a 6-3, 6-4 victory against Andy Murray on Saturday.
Defending champion Andy Murray and ATP finals hopefuls Mikhail Youzhny and Fernando Verdasco all made surprise early exits from the Valencia Open on Wednesday. World number four and top seed Murray fell 6-2, 3-6, 6-2 to Argentine Juan Monaco in the second round, while world number 10 Youzhny pulled out at the start of the day with a back problem.
Andy Murray battled past Romanian qualifier Marius Copil 6-3, 6-7(7), 6-4 at the European Open in Antwerp on Friday to reach his first singles semi-final in two years.
Rafael Nadal will become the first man to win 21 Grand Slam titles if he defeats the Russian in Melbourne.
Veteran Leander Paes brushed off the disappointment of Rio Olympics as he and his German partner Andre Begemann made it to the final of the ATP Winston-Salem Open beating Swede Robert Lindstedt and Pakistan's Aisam-ul Haq Qureshi in a close encounter.
The Serbian had to save two set points in the first set before finding his groove to reach his 10th title clash in Rome and remain on course to win his 36th ATP Masters 1000 crown and overtake Rafael Nadal on the all-time list.
After shaking hands with the opponents, the 24-year-old Zverev, ranked third in singles, approached the umpire's chair and hit it repeatedly before heading towards his courtside seat, upset over a line call during the match earlier.
The American was forced to default his semi-final match against Kenneth Carlsen because of an ankle injury
World No 1 Novak Djokovic ended Kei Nishikori's impressive debut at the ATP World Tour Finals with a 6-1, 3-6, 6-0 semi-final victory at the O2 Arena on Saturday.
Former world number one Rafa Nadal wasted a match point as he slipped to a surprise semi-final loss to Austrian Dominic Thiem on his beloved clay at the Argentina Open on Saturday.
Aryna Sabalenka rose above geopolitical tumult to become the first player to claim a Grand Slam title as a neutral at the Australian Open.
Roger Ferdrer came up with a solid all-round display to beat world No 1 Rafael Nadal 6-4, 6-3 in the final and win the Shanghai Masters on Sunday.
Spain's Marcel Granollers-Pujol upset top seed James Blake to claim the US Men's Clay Court Championship and his first ATP title.
While Federer and Nadal will look to reignite the flair and fight they showed to reach last year's final, 2018 could have a different script at play.
Wawrinka splits with long-time coach Norman
Nagal's court coverage and solid defence in long drawn points was the highlight of his win.
The 18-year-old Rune broke world number three Zverev four times in a flawless performance for his first win over a player in the ATP top-10
Murray was coached by Lendl from 2011-14 before he rejoined his team in June last year, helping Murray capture his second Wimbledon title and his second Olympic gold in Rio.
Davis Cup: Strong Indian team is firm favourite against Pakistan in historic clash
India's Leander Paes and Canada's Daniel Nestor have lost to Andreas Seppi and Fabio Fognini of Italy 3-6, 7-5, 10-8 in their semi-final of the ATP China Open tournament in Beijing.
Battle-scarred Argentine Juan Martin del Potro clinched his 21st career title with a 6-4, 6-4 win over Kevin Anderson in the Mexican Open final in Acapulco on Sunday.
Somdev Devvarman registered the biggest win of his fledgling career when the wiry Indian upstaged sixth seeded Marin Cilic in straight sets in the second round of the USD 1.4 million Legg Mason Tennis Classic in Washington.
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.
Nick Kyrgios was given a warning for taking too long to return Tsitsipas's serve
Tim Henman is determined to bury the disappointments of 2005 and begin the new tennis season on a confident note.
The ATP issued the latest men's tennis rankings on Monday and the top 10 list remains unchanged with Serbian tennis ace Novak Djokovic still leading the rankings.
To mark 20 years of Ivanisevic's win, the ATP tweeted, his road to victory.
Zverev has not lost to Wawrinka in two previous meetings but is not taking the 2014 Melbourne Park champion lightly.
Divij Sharan and Purav Raja shocked top seeded Colombians Juan Sebastian Cabal and Robert Farah to breeze into the summit clash of the ATP Claro Open, in Bogota, Colombia.
'To win a medal, the players will have to play a couple of tough rounds. The draws are fine, and balanced and give us the opportunity to go deep.'
Melbourne man McNamara won five singles titles and 19 in doubles and teamed up with compatriot Paul McNamee to win the Australian Open doubles in 1979 and Wimbledon twice in 1980 and 1982.
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.
Novak Djokovic reached the Paris Masters final for the sixth time