Joining Kumar and Gandhi in the next phase are Divya Sharma of Haryana and Varun Madan of Delhi, two of whom also made the main draw.
While Kumar overcame Nilesh Patankar of Maharashtra 4-3, Gandhi halted Reza Merchant, also of Maharashtra, with a 4-0 win in the third round qualifying matches to advance to the tournament proper from Group 4.
Divya and Madan registered impressive wins over Jigar Shah of Maharashtra and Aditya Singh Rajawat of Karnataka 4-0 and 4-2, respectively to qualify from Group 8.
Meanwhile, Aditya Agrawal of Maharashtra, Rajat Khaneja of Chandigarh and Jasim Tawin of Karnataka advanced to the third round.
Results (Qualifying): 3rd and final round: Dilip Kumar (TN) bt Nilesh Patankar (Mah) 36-3, 1-35, 37-12, 22-36, 20-29, 42-3, 35-29; Abhimanyu Gandhi (Guj) bt Reza Merchant (Mah) 40-1, 49(40)-0, 35-12, 40-6; Varun Madan (Delhi) bt Aditya Singh Rajawat (Kar) 39-24, 16-50, 45(31)-0, 20-39, 52-1, 47-15; Divya Sharma (Har) bt Jigar Shah (Mah) 51-39, 59(25)-9, 41-21, 43-14.
2nd round: Aditya Agrawal (Mah) bt Pratyush Somaiyajula (Mah) 34-22, 45-17, 56-0, 10-46, 30-22; Vipin Premi (UP) bt Mahadeo Bhogle (Mah) 31-32, 0-35, 34-22, 52-8, 45-17, 41-9; Abhimanyu Gandhi (Guj) bt Shailesh Rao (Mah) 33-24, 39-17, 21-28, 42-0, 40-22; Divya Sharma (Har) bt Arun Madhu (Raj) 30-18, 43-9, 40-27, 23-33, 25-33, 37-5.
Jigar Shah (Mah) bt Kekoo Nicholson (Mah) 35-21, 21-41, 33-5, 51-32, 13-39, 37-15; Reza Merchant (Mah) bt Sanjeev Shah (Mah) 1-51, 9-40, 42-19, 35-6, 30-8, 10-40, 36-10; Rajat Khaneja (Chd) bt Amanpreet Singh Padam (Mah) 34-23, 51(39)-0, 51-10, 43-7; Jasim Tawin (Kar) bt Parimal Barot (Mah) 32-21, 40-2, 44-12, 15-34, 41-7.