India Badminton star P V Sinndhu, Sai Parneet, the pair of Ponnappa and B S Reddy have entered the Quarter Finals of Singapore Open Badminton Super-series tournament today.In Women';s singles, Sindhu defeated Indonesia's Fitriati 19-21, 21-13, 21-8 in a pre-quarter final match in.In Men's Singles, Sai Parneet defeated China's Bin Qiao 21-15, 12-23, 21-16.In Mixed Doubles, the pair of Ponnappa and B. S Reddy beat the duo of Kim J.H. and Lee S.H. 17-21, 21-17, 21-16.The Women's doubles pair of Ponnappa and Nelakuri will be in action this evening.