Indian stars P.V. Sindhu and Saina Nehwal were knocked out of the $750,000 Australian Open Super Series badminton tournament following defeats to Tai Tzu and Sun Yu respectively in the quarter-finals.Sindhu lost to World No.1 Tzu Ying of Chinese Taipei 10-21, 20-22, 16-21 while Saina was defeated by Sun Yu 17-21, 21-10, 17-21.Sindhu won the first game before Tai staged a strong comeback to register a 10-21, 22-20, 21-16 verdict in the women’s singles clash which lasted for about an hour.The top seeded Tai improved her head to head record against World No.4 Sindhu to 7-3.In the opening game, Tai had no response to Sindhu’s smashes as the Rio Olympics silver medallist dominated the proceedings to pocket it easily.Tai, however, made a strong comeback in the second game, taking a 4-1 lead, before Sindhu clawed her way back to 8-8.It was a neck and neck battle at that time, and Sindhu then took a 13-10 lead, before Tai won four points on the trot to take a 14-13 lead which she extended further to 18-14.Sindhu made a critical error at that stage where she allowed Tai to save the match point, and take the game into the decider with a 22-20 win.The final game was again a close contest with both players trying to outwit each other. While Sindhu raced to a 14-10 lead, Tai kept her nerves to stage a comeback and make it 15-15.Towards the end, the Chinese Taipei shuttler played her A game to pocket the game 21-16.advertisementIn the other match, Sun Yu dominated the opening game taking a 8-4 lead before extending it further to 11-9 at the break. Saina, however, made a strong comeback after the break and went ahead 15-13 before Sun Yu gained eight straight points to pocket the game.In the second game, Saina surged ahead taking six straight points to lead 7-3 and went to the break at 11-4. Coming back, the Hyderabadi never allowed the Chinese to settle and extended her lead to 18-10 and easily winning it 21-10.The decider witnessed fierce battle between the two shuttlers splitting at 4-4 and then going neck and neck till 9-9 before Saina took the lead at 11-9.Post the break, Sun Yu took three points in a row to make it 12-12 and then went ahead with six straight points to make it 19-15. She kept her nerves and didn’t allow the Indian free her arms to run away with the match 21-17.Sun Yu will now take on Nozomi Okuhara, who beat fellow Japanese Sayaka Takahashi in another quarter-final tie.