Mahesh Bhupathi and Yuki Bhambri, playing for the first time together as a team, saw off initial resistance from Yannick Mertens and Stephane Robert to reach the men's doubles semifinals of the Delhi Open Tennis in New Delhi today. The Indians beat the Belgian-French combination 7-5, 6-1 in the quarterfinals of the hard court tournament at the DLTA complex.In the singles, Prajnesh Gunenswaran walked into the quarterfinals after getting a walkover from Chinese seventh seed Yan Bai. He will next face second seed Kimmer Coppejans, who won his second round against Maxime Janvier 6-2, 6-4.