Third seed Mukund Sasi Kumar beat qualifier Rohan Bhatia with a degree of comfort.
In other matches of the day, Aoran Wang of China outplayed qualifier Rashein Samuel 6-3 6-3, while compatriot Xin Gao outclassed Kunal Anand.
Russian Markos Kalovelonis, seeded seventh, succumbed to a strong challenge from another Chinese player Bowen Ouyang.
Singles Results: Aoran Wang (CHN) bt Rashein Samuel 6-3 6-3, Sasi Kumar Mukund bt Rohan Bhatia 6-2 6-2, Vasisht Cheruku bt Garvit Batra 6-1 6-0, Bowen Ouyang (CHN) bt Markos Kalovelonis (RUS) 7-6(4) 6-0, N Vijay Sundar Prashanth bt Wishaya Trongcharoenchaikul (THA) 6-3 6-1, Xin Gao (CHN) bt Kunal Anand 6-2 6-0, Sumit Nagal bt Siddharth Vishwakarma 6-4 6-4 and Manish Sureshkumar bt Zach Itzstein (AUS) 6-3 3-6, 6-3.