Changzhou (China) Sep 18 (IANS) Rio Olympics silver medallist P.V. Sindhu advanced to the pre-quarterfinals while her compatriot Saina Nehwal was knocked out of the opening round at the $1 million China Open World Tour Super 1000 tournament here on Tuesday.
Sindhu who clinched the China Open title in 2016 defeated World No 39 Saena Kawakami of Japan 21-15 21-13 in the opening round at the Olympic Sports Centre Xincheng Gymnasium here.
However London bronze medallist Saina went down narrowly 22-20 8-21 14-21 to South Korea s Sung Ji Hyun in a 48-minute clash.
In the men s doubles Manu Attri and B. Sumeeth Reddy progressed to the second round beating Taiwan s Liao Min Chun and Su Ching Heng 13-21 21-13 21-12 in 39 minutes.

--IANS tri/mr