The 24-year-old Pradhan matched the power play of Downer (world rank 207) and engaged the 25-year-old Englishman in long rallies in the five-game affair before making it to the last four.
Pradhan, who lost to eventual champion Sourav Ghosal in the quarter-finals of the nationals recently, completed a deserving 11-5, 11-13, 11-1, 10-12, 11-4 win to advance to the semi-finals of the event being held under the aegis of SRFI and Maharashtra Squash Rackets Association.
On the other hand, seasoned Services player Sandeep Jangra, the joint 3-4 seed, was packed off by Maharashtra's Abhishek Agarwal in four games. Agarwal fought back well after dropping the first game to snatch a 7-11, 11-6, 11-9, 11-8 win and enter the last four.
Delhi's Gaurav Nandrajog, the joint 3-4 seed completed the semi-final line-up. Nandrajog, after encounter initial resistance from Telengana's Ashray Ohri, found his form and raced to a 12-10, 11-1, 11-6 success.
Top seed Sachika powered her way past Amruta Swami of Maharashtra, recording a convincing 11-0, 11-1, 11-2 win, while Urvashi defeated state rival Pranjali Sharma 11-6, 11-8, 11-4.
Other results: Women's quarter-finals: 3-4 Sachika Balvani beat Sarah Vethekar 11-3, 11-4, 11-8; Riya Sisodia beat Neha Dhuru 11-0, 11-0, 11-1.
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