ATP Chennai Open Tennis tournament begins today. Swiss Stanislas Wawrinka is the top seed in the competition, with experienced players like Russian Mikhail Youzhny and Italian Fabio Fognini also taking part. Defending champion Janko Tipseravic had, earlier, pulled out, due to injury. India's top Singles player Somdev Devvarman, Yuki Bhambri and Jeevan Nedunchezhiyan have already made it to the main draw.In the Doubles, Leander Paes, Rohan Bopanna, Purav Raja and Divij Sharan are among the Indians, who will be seen in action with their respective team-mates. Today, Jeevan Nedunchezhiyan will take on Czech Jiri Vesely in the Singles first round.In the Doubles, the Indo-Russian duo of Saketh Myneni and Karen Khachanov will clash with the Spanish pair of Pablo Carreno Busta and Albert Ramos.