Vishnu Vardhan turned the heat on Siddharth Vishwakarma. In a match which went down to the wire, 35-year-old Vishnu used a bagful of tricks, sliced and diced his way to the semi-finals. Vaishnavi Adkar tore the form book to shreds as she ousted third seed Yubrani Banerjee 6-4, 6-0 in women's singles at the quarter-final stage.
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