Karen Khachanov advanced to the third round of a Grand Slam tournament for the first time by defeating 13th-seeded Tomas Berdych 7-5, 6-4, 6-4 at the French Open.The 21-year-old Russian posted his first win over a top-10 player when he beat David Goffin in Barcelona.Khachanov, who had 12 aces against Berdych, will take on another big server, No. 21 John Isner, for a spot in the fourth round.Juan Martin del Potro moved into the third round when his opponent, Nicolas Almagro, stopped early in the third set because of an injured left knee, dropping to the court and bawling.The 29th-seeded del Potro, the 2009 U.S. Open champion, was having his own physical problems, slowed by a bothersome upper right leg. He won the first set 6-3, then Almagro took the second by the same score, and it was 1-all in the third when the match ended.Almagro’s left knee was taped by a trainer. Then he stopped playing and rested both hands on his knees and shook his head. Then he held his hands on his head and began crying, before falling onto his back. Del Potro climbed over the net and walked over to check on Almagro, rubbing his belly.Marin Cilic advanced to the third round by beating Konstantin Kravchuk 6-3, 6-2, 6-2.The big-serving Croatian, who had 11 aces, broke Kravchuck’s serve at love to end the Russian’s Roland Garros debut.The seventh-seeded Cilic will next face either David Ferrer or Feliciano Lopez.
Rafael Nadal, who reached the Paris Masters quarter-finals after beating Uruguay’s Pablo Cuevas, admitted that his right knee was not 100 per cent.Nadal on Thursday said that he would compete in the upcoming ATP World Finals in London if nothing went wrong, reports Efe.”It’s obvious my knee is not 100 percent fit. If not, I wouldn’t have asked the trainer to tape it,” Nadal said.The World No.1 said the objective of the strapping was to support the kneecap but did not give more details.”Even if I withdraw tomorrow, it does not mean that I would be 100 percent fit in London,” he added, insisting that if nothing went wrong he would play in less than two weeks in London.