Star Indian shuttlers P.V. Sindhu and Lakshya Sen progressed to the quarterfinals of the US Open, BWF Super 300 tournament, after notching a straight-game win in their respective Round of 16 matches, here on Thursday. Two-time Olympic medallist Sindhu registered an easy 21-14, 21-12 win over Sung Shuo Yun of the Chinese Taipei in the Round of 16 women's singles.