HS Prannoy and young Priyanshu Rajawat notched up contrasting wins to set up an enticing all-Indian men’s singles semifinal clash in the Australian Open Super 500 badminton tournament here on Friday. Orleans Masters champion Rajawat will make his maiden appearance in a semifinal of a Super 500 tournament after knocking out compatriot Kidambi Srikanth 21-13, 21-8 in a lop-sided men’s …