In season's second Grand Slam French Open, World No.1 Novak Djokovic will be seen in action in the fourth round of men's singles event today. The Serbian player will be locking horns with Richard Gasquet of France. Defending champion Rafael Nadal will also eye for a quarterfinal berth. In the fourth round, he will be facing unseeded American J. Sock. Briton Andy Murray will also be seen in action today. In women's singles event, World No. 1 Serena Williams will face fellow American Sloane Stephens. India's Sania Mirza is the only Indian left in the tournament as Leander Paes and Rohan Bopanna, with their teammates, crashed out yesterday after losing their pre-quarterfinal fixtures.