strongLondon:/strong India's Leander Paes and Sania Mirza were yesterday drawn against the Serbian team of Nenad Zimonjic and Ana Ivanovic in the first round of the mixed doubles tennis competition at the London Olympics. The Indian team will have their task cut out when they take on Ivanovic, former women's singles World No 1 and Zimonjic, who has won four Grand Slam mixed doubles titles and three men's doubles titles. Zimonjic is also a former doubles partner of Paes. [caption id=attachment_399413 align=alignleft width=380