Star shuttlers PV Sindhu and HS Prannoy progressed to the second round but Lakshya Sen went down fighting to World No. 1 Viktor Axelsen at the Singapore Open Super 750 Badminton Tournament here on Wednesday.

Up against World No. 21 Line Hojmark Kjaersfeldt of Denmark, Sindhu registered a 21-12, 22-20 win in a 44-minute opening round encounter to set up a mouth-watering battle against Rio Olympic champion Carolina Marin.