Novak Djokovic scraped over his first hurdle at the Rome Masters.
It was Kristyna's first win over a top-five ranked player and she will go on to play fellow Czech Barbora Strycova in the quarter-finals.
"I hope they both become ultra successful because at the end of the day, they will be humbled very quickly. If you become successful you cannot carry on like this.
Novak Djokovic has admitted that Andy Murray's attempt to surge to the top of the rankings has rejuvenated an otherwise mediocre season for the World No. 1.
Roger Federer is the oldest male player to win a Grand Slam title since Australia's Ken Rosewall won at Melbourne Park in 1972 at the age of 37.
Factbox on Switzerland's Roger Federer, who defeated Rafael Nadal in the Australian Open men's singles final on Sunday.
For a seven-time champion who is a month shy of his 35th birthday, and is known to have a dodgy back, fate could not have dealt Roger Federer a better hand this week as he became the first, and so far only, man to reach the Wimbledon fourth round.
Rafael Nadal left German qualifier Yannick Maden no hope as he booked his ticket for the third round of the French Open in ruthless fashion with a 6-1, 6-2, 6-4 victory.
Men's tennis steps into the unknown next week when the young guns expected to follow in the footsteps of the current golden generation contest the inaugural Next Gen ATP Finals in Milan.
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.
The coach of Ana Ivanovic, and father-in-law of men's world number two Andy Murray, collapsed in the stands at Rod Laver Arena during the Serb's third round clash with American Madison Keys on Saturday, causing play to be suspended indefinitely.
World number ones Serena Williams, aiming to complete the first calendar-year Grand Slam in 27 years, and Novak Djokovic have been named the top seeds for the US Open championships starting on Monday in New York.
News of all that's transpired on and off the tennis courts.
World No 1 Novak Djokovic and Serena Williams advanced safely to the next round of the US Open on Saturday but the women's draw saw yet another big upset as Wimbledon winner Petra Kvitova was sent packing by a 145th-ranked qualifier.
Rafael Nadal says winning a French Open-Wimbledon double for the third time in his career will be "complicated" but is highly motivated to have a go as he prepares for the grasscourt season.
Australian Nick Kyrgios did his best to enliven a damp and dismal Parisian day with some eye-catching play and colourful language as the French Open began without part of the usual furniture on Sunday.
Andy Murray and Rafael Nadal were winners but six seeds were beaten in a day of upsets in the second round at the Rogers Cup in Montreal on Thursday.
Former world number one Serena Williams looked sharp in her return to the hardcourts after a week-long break, soundly defeating Daria Gavrilova 6-1, 6-2 on Monday to advance to the second round of the Cincinnati Masters.
The Serb, who turned 30 last month, will drop outside the top two for the first time since march 2011 on Monday -- quite a contrast to a year ago when his domination of men's tennis was complete after winning the French Open for the first time.
Rafael Nadal returns to his favourite tournament, albeit not his preferred court, to begin pursuit of a record-extending 10th French Open title on Monday against Frenchman Benoit Paire.
Djokovic and Agassi are deep thinkers about the sport and McEnroe said that their partnership, however long it lasts, can be a meeting of minds
Tommy Haas kept alive his slim chances of qualifying for next month's ATP World Tour Finals when he edged past near namesake Robin Haase 6-3, 4-6, 6-4 to lift his 15th career title at the Vienna Open on Sunday.
Rafael Nadal has confirmed that he will play at Rio 2016 despite suffering with a wrist injury as he prepares for the Olympic Games. Speaking after training at the Olympic Tennis Centre in Rio on Tuesday (2 August), the Spanish team's flag bearer was asked if he would be fit enough to compete. "Yes," he said. "I was talking with the whole team and the team decided that I am going to play, so I'm going to try to train for the next couple of days.
Novak Djokovic recovered from a slow start as he continued the bid to retain his world number one ranking with a 4-6, 6-2, 6-3 win over 14th-seeded Bulgarian Grigor Dimitrov in the Paris Masters third round.
Australia's new Davis Cup captain Lleyton Hewitt has backed the country's bad boy of tennis Nick Kyrgios to "control" the image he projects and break through for a grand slam trophy in the next year or two.
With the physical demands of modern-day tennis taking its toll the tournament will start without four of the top 11 in the ATP rankings including defending champion Stan Wawrinka who ended his season early with a knee injury.
Andy Murray's dedication to the Davis Cup has proved invaluable to the British team, but it may also rob the ATP Tour Finals of one of it's biggest draws this year.
Unseeded American Lauren Davis secured the first big upset of the BNP Paribas Open when she ousted third seed Victoria Azarenka of Belarus in the second round in Indian Wells on Friday.
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.
Gilles Simon will carry the distinction of being the first man to prise a set off Novak Djokovic at this year's Australian Open but the lion-hearted Frenchman was crushed after going down in a five-set classic on Sunday.
The future arrived late but after some old-fashioned glitches, two Russian trailblazers fired the first shots in what could be a revolution in tennis at the Next Gen ATP Finals on Tuesday.
A summary of sports events and sports persons, who made news on Monday
Roger Federer returned from a month-long layoff with a 6-4, 6-4 second round victory over Roberto Bautista Agut on Tuesday at the Western and Southern Open in Cincinnati.
Marathon man Kei Nishikori secured a monumental upset by sweating out a 6-4, 1-6, 7-6(4), 6-3 win over world number one Novak Djokovic at the U.S. Open on Saturday to become the first Japanese man to reach a Grand Slam final.
World number five Roger Federer delivered a tennis masterclass to beat rising star Alexander Zverev 6-1, 6-3 and clinch a record ninth Halle Open title on Sunday as he lay down a marker in the lead-up to Wimbledon.
After six months out of the game, Federer's fairytale return continued under the lights of Rod Laver Arena where he emphatically quashed doubts about his fitness in three hours and 24 minutes of high-octane tennis.
A rampaging Roger Federer delivered a stunning reminder of his class at the Australian Open on Friday with a crushing 6-2, 6-4, 6-4 win over Tomas Berdych to storm into the fourth round.
The fluorescent yellow outfit Victoria Azarenka wore as she dismantled Caroline Wozniacki at the Australian Open on Thursday was a one-word fashion statement -- loud.
Images from Day 3 of the Australian Open in Melbourne on Wednesday
India's top tennis players Mahesh Bhupathi, Saketh Myneni, Jeevan Nedunchezhiyan and Sriram Balaji have been granted wild card entries into the doubles draw of Chennai Open, the organisers announced on Monday.
