A total of 13 Indians will feature in the singles main draw of the Chennai Open ATP Challenger to be played at the SDAT tennis stadium in Chennai from today. Three Indians got into the main draw after coming through the final qualifying round on Sunday. The singles main draw will see top-seed Jordan Thompson of Australia (ranked 103) take on Egypt's Karim-Mohamed Maamoun in round one.India's top singles player, Yuki Bhambri, the second-seed will take on Bernabe Zapata Miralles of Spain in his opening match.The 112-ranked Bhambri, who qualified for the Australian Open, will be looking for some momentum ahead of the long season, which also includes a Davis Cup tie against China.