Rafael Nadal had to battle back from a set down to beat Frenchman Paul-Henri Mathieu 3-6, 6-3, 6-2 in Montreal.
World No 1 Novak Djokovic will kick off the defence of his Australian Open title with a first round tie against unseeded Frenchman Paul-Henri Mathieu after the draw was made for the first Grand Slam of the season on Friday.
Frenchman Paul-Henri Mathieu gave the defending champion a nasty 20th birthday fright before the Spaniard prevailed 5-7, 6-4, 6-4, 6-4.
Russian Nikolay Davydenko clinched his first title of the season on Sunday when he crushed Frenchman Paul-Henri Mathieu 6-4, 6-2 to win the German Open.
Rafael Nadal will have to contend with more than 15,000 fans determined to ruin his 20th birthday celebrations when he faces the French hope on Saturday.
Roger Federer and Mareia Sharapova provided proved too strong in gale-force winds to breeze into the fourth round of the US Open on Saturday.
Andy Roddick took out his frustrations on Frenchman Paul-Henri Mathieu on Sunday to seal a place for the United States in the Davis Cup semi-finals, where they will take on Spain. Russia and Argentina will contest the other semi-final in September after wrapping up their ties with a match to spare.
Mario Ancic, on a comeback trail after dropping out of top 100, knocked out sixth seed Marcos Baghdatis 6-4, 6-2.
British number one Andy Murray stormed into the Marseille Open final with a 6-2 6-2 win over Frenchman Paul-Henri Mathieu on Saturday.
Roger Federer and Rafael Nadal returned from vacation to post first-round wins at the Toronto Masters.
Roger Federer began the defence of his Dubai Open title with a 7-6, 6-3 win over compatriot Stanislas Wawrinka
Rafael Nadal will bid for a third consecutive title on Sunday when he faces 35-year-old Andre Agassi
Top-seed Andre Agassi easily advanced to the quarter-finals of the Washington Classic with a victory over Kristian Pless.
Richard Gasquet won a 13th career singles title by beating fellow Frenchman Paul-Henri Mathieu 7-5 6-4 in the Open Sud de France final in Montpellier on Sunday.
Eighth seed American Andy Roddick has pulled out of the Toronto Masters because of illness, the ATP Tour said on Tuesday.
The world number one beat Frenchman Sebastien Grosjean 6-3, 6-3 in the second round of the Toronto Masters.
The top seed beat Mariano Puerta in 72 minutes to set up a semi-final with France's Paul-Henri Mathieu in the Montreal Masters.
The two former world number ones and French Open champions traded blows and counter-punches for two hours 48 minutes.
Third seed Rainer Schuettler of Germany was the first casualty at the ATP Chennai Open.
Images from Day 1 of the French Open matches played at Roland Garros on Sunday
India's big hope Yuki Bhambri crashed out of the US Open men's singles qualifiers with a three-set defeat to Japanese Go Soeda while Prajnesh Gunneswaran also suffered a tame defeat in New York.