Novak Djokovic has parted company with coach Radek Stepanek days after the departure of head coach Andre Agassi from his team, the former world number one announced on Wednesday.
Take a look at the five top contenders for the men's singles title at the French Open:
The 20-time Grand Slam champion has not played a tournament since his Australian Open semi-final exit against Novak Djokovic last year, undergoing two knee surgeries since.
Rohan Bopanna and Pablo Cuevas shocked top seeds Marcelo Melo and Lukas Kubot to storm into the semi-finals of the Erste Bank Open
Novak Djokovic beat defending champion David Ferrer of Spain 7-5 7-5 to win the Paris Masters on Sunday and keep alive his hopes of reclaiming the world number one spot by the end of the year.
Monfils, 35, reached the last four at the 2008 French Open and repeated the feat eight years later at the 2016 US Open but has never reached a Grand Slam final.
Three contenders for the men's singles title at the Australian Open, which starts on Sunday.
Andy Murray has dismissed suggestions that the pressure of being the world's top tennis player is affecting his performance after losing to Spaniard Albert Ramos-Vinolas in the Round of 16 of the Monte Carlo Masters.
Mahesh Bhupathi and Max Mirnyi suffered their third defeat in an ATP Masters series final this season, losing the summit clash of the Cincinnati event 3-6, 4-6 to second seeds Mike and Bob Bryan.
Osaka survives test to reach last 16
Held over because of heavy rain that drenched parts of southern China over the weekend, Berdych maintained his composure through another frustrating weather interruption to win in straight sets.
Banned Serbian tennis player Viktor Troicki was "innocent" of a doping violation and the country's Davis Cup team supported him, World No 1 Novak Djokovic said on Tuesday.
Rohan Bopanna and Aisam-ul-haq Qureshi overcame a stiff resistance from Julian Knowle and Vasek Pospisil before moving to the pre-quarterfinals of the ATP Monte Carlo Rolex Masters.
Rafael Nadal claimed a fifth title since his return from injury when the Spanish world number five dismissed 15th-seeded Swiss Stanislas Wawrinka 6-2, 6-4 to win the Madrid Open on Sunday.
A summary of sports events and sports persons, who made news on Sunday
Nadal also won through to the final of the doubles with fellow-Spaniard Feliciano Lopez at the Barcelona Open.
Mahesh Bhupathi and Max Mirnyi stunned top seeds Lukasz Kubot and Oliver Marach in straight sets to storm into the doubles final of the Valencia Open.
Serbia's former World No 12 Viktor Troicki has been handed an 18-month suspension by the International Tennis Federation (ITF) after violating doping regulations.
While Leander Paes- Nenad Zimonjic crashed out in the quarterfinals of the Rome Masters
Rafael Nadal eased past Spanish compatriot Nicolas Almagro 6-3, 6-1 to reach the Barcelona Open third round on Wednesday as he began his bid for a ninth title on the clay in the Catalan capital.
The Russian registered an easy 6-2, 6-2 victory in the second round of the Rome Masters.
A doubles title continued to elude Mahesh Bhupathi and Max Mirnyi as they lost the Valencia Open final to British brothers Andy and Jamie Murray in Valencia.
Fourth seed Novak Djokovic suffered a 6-4, 6-4, 6-4 defeat by Germany's Philipp Kohlschreiber in the third round of the French Open on Saturday.
World number one Rafael Nadal has booked a place in the end-of-season ATP World Tour finals being staged in London for the first time, organisers said on Tuesday.
Ferrer, 37, announced earlier in the year he would end his 19-year career at the Madrid Open and prolonged his time on court by a day by beating Roberto Bautista Agut on Tuesday, but was easily overpowered by world number four Zverev.
Roger Federer inflicted a rare claycourt defeat on his great rival Rafael Nadal on Sunday when he beat the world number one 6-4, 6-4 in the Madrid Open final. Nadal was bidding to become the first man to win all three claycourt Masters Series events in one year after his victories in Monte Carlo and Rome but slipped to only his fifth loss on his favoured surface in 155 matches since 2005.
Leander Paes and his partner Lukas Dlouhy entered the quarterfinals of the euro 2,750,000 Monte-Carlo Rolex Masters in Monaco, defeating unseeded Spaniard duo of Albert Montanes and Tommy Robredo in a match tie-breaker.
The Spanish teenager produced another dazzling performance to storm into the Barcelona Open quarter-finals.
Mahesh Bhupathi and Fernando Gonzalez of Chile upset eighth seeds Simon Aspelin of Sweden and Todd Perry of Australia at the Monte Carlo Tennis Masters Series.
The world's top four players will face off at the Cincinnati Masters on Saturday as Roger Federer, Andy Murray, Rafa Nadal and Novak Djokovic go head-to-head in two mouth watering semi-finals.
They sailed into the semi-finals of the Master Series with a 6-4, 7-5 victory over the Swiss pair of Roger Federer and Yves Allegro.
Roger Federer's struggles continued when he was beaten 7-6 (2), 6-4 by fast-rising Austrian Dominic Thiem in the third round of the Italian Open in Rome, on Thursday.
The Spanish teenager edged out Argentine ninth seed Guillermo Coria in five sets to win the Rome Masters.
Indian tennis ace Rohan Bopanna and his Uruguayan partner Pablo Cuevas were knocked out of the Madrid Masters after being crushed in straight sets in the opening round of the men's double event here last evening.
They won the Monte Carlo Masters doubles at Monaco after their third seeded opponents Bob and Mike Bryan conceded a walk-over in the final.
Fifth seeds Leander Paes and Nenad Zimonjic of Serbia entered the semi-finals of the Monte Carlo Masters, beating the Czech pair of Martin Damm and Radek Stepanek.
Carlos Alcaraz crashed to a humbling 6-3 7-6(4) defeat by Hungarian qualifier Fabian Marozsan in the third round of the Italian Open.
The top seeds lost to seventh seeds Gaston Etlis and Martin Rodriguez of Argentina in the quarter-finals of the Monte Carlo Masters.\n\n
Lleyton Hewitt's run in the Monte Carlo Masters was halted by Germany's Rainer Schuettler.
