The left-handed player, seeded 6 and ranked 400 in the world, got past Indonesian No. 1 and Davis Cupper Christopher Rungkat, seeded no 2 here and ranked 303, 7-6 (2) 6-2 in the quarters to earn a meeting in the semis against compatriot Purav Raja.
Raja, a wild card, continued his sensational run by entering the last four after shutting out James Marsalek of Great Britan, who had shocked Indian No. 3 seed Sriram Balaji in the pre-quarters yesterday, in straight sets (6-3 6-4) in 90 minutes.
The other semifinal will be between Croatian Mate Pavic, conqueror of top seeded Indian Davis Cupper J Vishnu Vardhan (who pulled out after losing the opening set) yesterday, and Taipei's No. 4 seed Liang-chi Huang.
Pavic sent eighth seeded Indian rival Ranjeet Virali- Murugesan packing 7-6 (2) 6-1 in five minutes under two hours, while Huang defeated Nicholas Reissig of Austria 4-6 6-1 6-2 in an hour and 24 minutes.