Fifth seed Sindhu, who had made early exits in China and Korea, got back her bearing as she overcame former World Junior Champion Gregoria 22-20 21-18 in 38 minutes to keep her 5-0 record intact against the Indonesian.
The Olympic silver medallist will now face Korea’s An Se Young next.
World Championships bronze medallist B Sai Praneeth also made it to the second round beating the legendary Lin Dan 21-14 21-17 in a 35-minute openinground clash.
The Hyderabad shuttler is likely to meet world no 1 and two-time world champion Kento Momota of Japan next. He had lost to Momota at the World Championships in Basel, Switzerland.
Thailand Open champions Satwiksairaj Rankireddy and Chirag Shetty also made a good start to their men’s doubles campaign, beating Korean pair of Kim Gi Jung and Lee Yong Dae 24-22 21-11 in 39 minutes.
Former Commonwealth Games champion Parupalli Kashyap, who had reached the semifinals at Korea Open, failed to cross the opening round after losing 13-21 12-21 to Thailand’s Sitthikom Thammasin in the men’s singles.
National champion Sourabh Verma, who had clinched the Hyderabad Open and Vietnam Open this year, also made an early exit after going down 21-19 11-21 17-21 to Mark Caljouw of the Netherlands.
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