PARIS (AFP) - Roger Federer's 10th French Open campaign enjoyed a double boost on Monday when he negotiated his way past American Sam Querrey and then saw possible quarter-final opponent Richard Gasquet pull out injured. Top seed and world number one Federer, still missing a Roland Garros title from his collection of 12 Grand Slam trophies, saw off world number 40 Querrey 6-4, 6-4, 6-3 in just over 90 minutes. He will now face either Spain's Albert Montanes or Kristof Vliegen of Belgium for a third round spot. "This was a potentially dangerous match so I'm happy to get through and reach the next round," said Federer. French eighth seed Gasquet, who was set to meet the Swiss in the quarter-finals, handed Federer a further boost by withdrawing from the tournament because of a left knee injury. Federer's win threw the spotlight back onto triple champion Rafael Nadal who begins his campaign later Monday to emulate Bjorn Borg by winning four successive French Opens when he tackles Brazilian qualifier Thomaz Belluci. The second seeded Spaniard comes into Roland Garros boasting a perfect record of 21 wins in 21 matches here and an intimidating run of 108 wins in 110 claycourt outings since April 2005. He has also defeated Federer in the last two finals. Serbian third seed Jelena Jankovic, who reached the semi-finals of a Grand Slam event for the first time here 12 months ago, enjoyed a 7-6 (7/3), 6-2 victory over Romanian lucky loser Monica Niculescu. The 23-year-old will next meet either Italy's Tathiana Garbin or New Zealander Marina Erakovic for a place in the third round as she plans to make the most of the shock retirement of Justine Henin, the winner here for the last three years. "I don't see myself as the favourite," said Jankovic. "I am the number three in the world. There are others who are favourites but I feel I have made improvements. "I am more mature. I have played in three Grand Slam semi-finals and lost to the eventual winner. Justine was the one against whom I always had the most trouble, so I have a better chance now." Cypriot Marcos Baghdatis, the 17th seed who spent his formative years in Paris, was knocked out 6-2, 6-4, 6-2 by Italy's Simone Bolelli who goes on to face Juan Martin del Potro, one of 19 Argentinians who made the main draw. "He has played more tournaments than I have recently, he hit the ball well and deserved to win," said Baghdatis who was playing his first claycourt event of the season. Guillermo Coria, the 2004 runner-up who is slowly trying to rebuild his career after a year on the sidelines because of a shoulder injury, gave Spanish 12th seed Tommy Robredo a scare when he took the first set before running out of steam. Argentinian Coria, a former world number three and who squandered two match points in the 2004 final against compatriot Gaston Gaudio, has seen his ranking slump to 733. He showed little sign of his problems when he took the first set off Robredo, a three-time quarter-finalist. But after having played just four tournaments since the 2006 US Open, his lack of sharpness told and Robredo eventually ran out a 5-7, 6-4, 6-1, 6-4 winner and will next face either Serbia's Victor Troiki or Marc Gicquel of France. Later Monday, women's eighth seed Venus Williams begins her 12th successive Roland Garros against 35-year-old Israeli Tzipora Obzilier. The American's best performance here remains her runner-up spot to sister Serena in 2002.