India's two-time Olympic medallist PV Sindhu and compatriot H.S Prannoy stormed into their respective women's and men's singles semi-finals at the Swiss Open here while the women's doubles pair of Ashwini Ponnappa and N Sikki Reddy made its exit from the World Tour Super 200 event on Friday.

Sindhu, who had made an early exit from the prestigious All England Open last week, made up for that disappointment by reaching the last-four stage here, beating Canada's Michelle Li in a quarter-final encounter that lasted 36 minutes. Prannoy had to spend a few more minutes on the court as he got the better of compatriot Parupalli Kashyap, winning 21-16, 21-16 in 43 minutes in the event with prize money of USD 180,000 being played at St. Jakobshalle Basel.