Sindhu, seeded fourth in the tournament, lost 21-15, 14- 21, 22-24 against her eighth-seeded Chinese opponent in the quarterfinal contest that lasted one hour and 17 minutes.
Rio Olympic silver medallist and fourth seed Sindhu continued her domination right from the start against Japan's Aya Ohori and won the match 21-14, 21-15.
Saina, who recently made a first-round exit at the Malaysia Open, underwent knee surgery after the 2016 Rio Olympics and since recovering the Hyderabad girl has been struggling to return to her menacing best
While the cricket fans are anxiously waiting for the release of Sachin Tendulkar's biopic, another one is in the making for them. Ace Indian shuttler Saina Nehwal's biopic is in making and her role would be played by none other than Shraddha Kapoor.
The 21-year-old from Hyderabad will square off against Indonesia's Dinar Dyah Ayustine in the opening round.
Kashyap lost 10-21 22-20 13-21 to former World No. 6 and third seed Qiao Bin of China in a contest which lasted an hour and 16 minutes at the Olympic sports center.
Sindhu, who had slipped to number five last week, earned two spots on the basis of making the quarterfinals of the recently-concluded Singapore Open Super Series.
India`s star shuttler P.V. Sindhu is focusing on coming championships and aims to give her best to achieve her ultimate goal -- becoming World No. 1.
The former World No. 6, Kashyap will face third seeded Chinese Qiao Bin on Thursday.
Gopichand expressed satisfaction over the recent performances of Indian shuttlers, including P V Sindhu and B Sai Praneeth, but said its time to step up to the next level as a lot still needs to be achieved.
Praneeth had clinched the Canada Open last year and reached the Syed Modi Grand prix Gold this year in January. However, he hurt his shoulder during the final.
With this win, Praneeth has now extended his head-to-head record against Srikanth to 5-1
Kidambi Srikanth vs Sai Praneeth Live: In a historic all-Indian final, two of India's finest male shuttlers will clash against each other in the final of Singapore Open Super Series badminton.
Going in tomorrow match, the higher ranked Srikanth will be deemed favourite, but Praneeth has a 4-1 head-to-head record against his more illustrious compatriot.
The 24-year-old from Hyderabad, who had clinched the Canada Open last year, came out with a well sorted strategy and executed it brilliantly to completely blow away his opponent in the opening game.
Sindhu, who had dropped down to world number 5 due to her first round exit at the Malaysia Open last week, never looked the player who had outsmarted Marin not too long back in New Delhi.