Pune's Chaukulkar breezed to a 6-4 6-2 win over his seeded rival after a two-hour battle of the baseliners to set up a clash with city-mate and second seed Nitin Kirrtane for a place in the last four.
Veteran Kirrtane eased past unseeded Arnav Goel of Uttar Pradesh 6-3 6-2 in another pre quarter final match.
Bhavesh Gour of Madhya Pradesh also endured a energy- sapping encounter to overcome Abhinansu Borthakur of West Bengal 7-6 4-6 7-6 in a marathon pre-quarter-final.
Results: Singles (Pre-quarter-finals): Kunal Anand (Del) bt Anvit Bendre (Mah) 6-2 7-6 (8-6); Rohan Bhatia (Mah) bt Chilakalapud Anirudh (AP) 6-2 6-1; Bhavesh Gour (MP) bt Abhinansu Borthakur (WB) 7-6(7-3) 4-6 7-6(7-1); Shaikh Abdullah (Tel) bt Rohit Rampuria (WB) 6-1 6-4; Jatin Dahiya (Del) bt Yash Yadav (MP) 6-0 6-2; Chandril Sood (UP) bt Ankit Chopra (Pun) 6-3 6-2; Nitin Kirrtane (Mah) bt Arnav Goel (UP) 6-3 6-2; Tejas Chaukulkar (Mah) bt Prajwal Dev (Kar) 6-4 6-2.
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