A valiant HS Prannoy battled his way to the semifinals, becoming only the first Indian in 41 years to win a badminton medal in men's singles at the Asian Games but it was curtains for PV Sindhu in women's singles on Thursday. Playing with a taping on his lower back and a belt under his shirt, Prannoy battled severe back spasm to dish out a performance for the ages, outshining Malaysia's Lee Zii Jia 21-16 21-23 22-20 in the quarterfinals to assure India a second badminton medal at the ongoing Games. India had won a silver in men's team championships last Sunday.