The 11th seed, Sindhu, who clinched the bronze medal in 2013 and 2014 editions, had to dig deep into her reservoir of talent to outwit Denmark's Line Kjaersfeldt 11-21, 21-17, 21-16 in a 50-minute match.
The World No. 13 Indian had spent most of the time this season nursing an injury and had been struggling for form. Sindhu, who got a bye in the first round, will next take on Olympic champion and former World No.1 LI Xuerui of China in the prequarterfinals.
World No. 3, Srikanth, however, didn't need to break any sweat as he brushed aside Australia's Michael Fariman 21-10, 21-13 in a 24-minute lop-sided match. The India Open winner will face Chinese Taipei's Hsu Jen Hao next in the second round.
In the women's singles match, Sindhu was caught offguard by Line, ranked 35th in the world, as she didn't give the Indian any chance in the first game and held on to an early 6-1 lead to earn the bragging rights.
The Indian got her bearings in the second game as she opened up a 5-2 lead but Line clawed back at 7-7. Sindhu, however, once again drifted away and managed to held on to her lead even though Line kept breathing down her neck.
In the decider, Line zoomed to a 4-1 lead but Sindhu turned the table with four straight points. The duo then fought tooth and nail before Saina jumped from 8-9 to lead 13-9. The Dane came as close as 14-15 but Sindhu ensured there was no more hiccups.
In men's singles, Srikanth had no problems as he quickly broke off at 4-4 and 6-6 in the first and second game respectively and held on to his fort to eventually come up trumps.
Image: PV Sindhu
Photograph: Robertus Pudyanto/Getty Images
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