The 18-year-old Sindhu, who won the Malaysia Open and Macau Open last year besides the prestigious World Championship bronze, prevailed over Japan's Shizuka Uchida 21-17 17-21 21-16 in a women's singles match. The Indian will next take on World No. 3 Yihan Wang tomorrow.
After three first round exits in the All England, Swiss Open and India Super Series, Srikanth finally got his form back as he notched up an upset 18-21 21-15 21-8 win over the world championship bronze medallist.
In the men's doubles competition, Alwin Franchis and Arun Vishnu were humbled by the top seeded Indonesian combo of Mohammad Ahsan and Hendra Setiawan 21-17 24-22.
Another Indian pair of Arun Vishnu and Aparna Balan, too, failed to cross the second round hurdle, as they went down fighting 21-23 17-21 to Gideon Markus Fernaldi and Rizki Amelia Pradipta of Indonesia in the mixed doubles event.
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In the women's singles competition, Sindhu was 11-10 ahead at the first interval and the Indian kept the pressure on the world number 113 Japanese Shizuka even after the break as she moved from 14-10 to 19-14 before pocketing the game.
In the second game, Uchida turned the tables after an early fight to lead 11-8, but Sindhu clawed back at 13-13. The Japanese, however, was not yet done as she again drew parity at 16-16 and then reeled off four points to take the match to the decider.