$ 0 0 Serbia's Novak Djokovic celebrates after winning his French tennis Open second round match against France's Jeremy Chardy at the Roland Garros stadium in Paris on May 28, 2014. Novak Djokovic of Serbia reacts during his men's singles match against Jeremy Chardy of France at the FrenchOpen tennis tournament at the Roland Garros stadium in Paris May 28, 2014.Serbia's Novak Djokovic eyes the ball during his French tennis Open second round match against France's Jeremy Chardy at the Roland Garros stadium in Paris on May 28, 2014. France's Jeremy Chardy returns the ball to Serbia's Novak Djokovic during their French tennis Open second round match at the Roland Garros stadium in Paris on May 28, 2014.France's Jeremy Chardy serves to Serbia's Novak Djokovic during their French tennis Open second round match at the Roland Garros stadium in Paris on May 28, 2014.Serbia's Novak Djokovic (R) shakes hands with France's Jeremy Chardy at the end of their French tennis Open second round match at the Roland Garros stadium in Paris on May 28, 2014.Serbia's Novak Djokovic returns the ball to France's Jeremy Chardy during their second round match of the FrenchOpen tennis tournament at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. Serbia's Novak Djokovic reacts during his French tennis Open second round match against France's Jeremy Chardy at the Roland Garros stadium in Paris on May 28, 2014. Serbia's Novak Djokovic celebrates winning his second round match of the FrenchOpen tennis tournament against France's Jeremy Chardy at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. German former tennis player Boris Becker and coach of Serbia's Novak Djokovic attends a Djokovic's French tennis Open second round match at the Roland Garros stadium in Paris on May 28, 2014.