The 22-year-old Indian was beaten by Italy's Fabio Fognini in the first round of the Mumbai Open.
Rohan Bopanna squandered three match points and lost to Nicolas Devilder in the Mumbai Open first round.
Wilcard entrant Nicolas Kiefer beat third seed Paul-Henri Mathieu 6-4, 6-3, while German Rainer Schuettler knocked out seventh seed Julien Benneteau 7-5, 6-3 at the ATP Mumbai Open tennis tournament.
The Indo-Pak pair put in a clinical performance to eliminate the Indian wildcard pair of Stephen Amritraj and Somdev Dev Varman 6-3, 6-2 at the Mumbai Open on Monday.
Germany's Bjorn Phau beat South African Wesley Moodie in the only other first round match that was completed before rain intervened at the Mumbai Open.
Karan Rastogi was 6-5, 5-7, 1-3 down against Purav Raja when he suffered cramps and had to quit in the qualifying round at the ATP Mumbai Open.
After Marat Safin and Marcos Baghdatis, Lleyton Hewitt, the lone star in the player field, is also unlikely to grace the tournament after pulling out of the crucial Davis Cup match against Serbia's Novak Djokovic in Belgrade due to a viral infection.
The US-based lad is hoping to carry on his fine showing at the NCAA Championships in the Mumbai Open.
Only three months since his return to the tour after an injury, the German has clawed his way back to 131 from 404.
Cypriot Marcos Baghdatis and Frenchman Jo Wilfried Tsonga joined the list of high-profile pull-outs from the ATP tournament, to be played at the CCI, Mumbai, from September 24 to 30.
India's Rohan Bopanna and Pakistan's Aisam-ul-Haq Qureshi will resume their partnership at the US $416,000 ATP Mumbai Open, at the Cricket Club of India from September 24 to 30.
The 20-year-old is prepared to go through the grind for a berth in the main draw of the Mumbai Open.
Tournament director Gaurav Natekar confirmed that the Russian will not be playing in the tournament, which will be held at the Cricket Club of India from September 24 to 30.
'I will make the final decision on Sunday, Monday or on the morning I'm scheduled to play,' the Indian tennis ace said.
Also lining-up for the September 24-30 ATP event are Marcos Baghdatis and Richard Gasquet.
Indian tennis ace Leander Paes says he's a lot fitter now than he was seven years ago.
The Indian ace faces her Bangalore Open conqueror, Yaroslava Shvedova of Russia, in the first round of the grass court championships.
The 27-year-old beat fourth seed Frank Dancevic of Canada to qualify for the grass court Grand Slam.
The Indian Davis Cupper was beaten by South Africa's Wesley Moodie in the first round singles qualifier at Wimbledon.
Back from an injury-forced break, Russian tennis ace Dmitry Tursunov is looking to assemble the missing parts in his game.