Siddarth Vishwakarma downed Rishabdev Ram in three sets, while Nitin Kumar Sinha, the 13th seed, edged past fifth seed Jatin Dahiya 6-4 in the third set.
Neeraj Elangovan, seeded 15th, started strongly against sixth seed Manish Suresh Kumar but fitness problems got in the way and Manish ran out steam to lose 6-0 7-5.
In yet another three setter, 10th seeded Rashein Samuel defeated local favorite Fahad Mohamed 5-7 6-4 6-1.
The only foreigner in the qualifying draw Zach Itzstein of Australia outplayed third seeded Shaikh Abdullah in straight sets.
Fourth seed Prajwal Dev shrugged of a sluggish start to beat Basil Chuma 7-5 6-0.
Results of Qualifying Final Round: Siddharth Vishwakarma beat Rishabdev Raman 6-4 5-7 6-3, Nitin Kumar Sinha (13) beat Jatin Dahiya (5) 2-6 6-3 6-4, Manish Sureshkumar (6) beat Neeraj Elangovan (15) 2-6 6-0 7-5, Vasisht Cheruku beat Faisal Qamar 6-2 6-2, Rohan Bhatia beat Arjun Mahadevan 6-4 6-3, Rashein Samuel (10) beat Fahad Mohammed 5-7 6-4 6-1, Zach Itzstein (AUS) beat Abdullah Shaikh (3) 6-2 6-3, S D Prajwal Dev (4) beat Basil Khuma (14) 7-5 6-0.