New Delhi: Top Indian shuttlers Saina Nehwal, PV Sindhu and Kidambi Srikanth will all be in action on Day 5 of the World Badminton Championships 2017 being held in Glasgow, Scotland. The star Indian trio will be vying for places in the semi-finals of the women's and men's singles events, respectively. London Olympics bronze medallist Saina, who had won silver in the last edition, dished out a gritty performance to outwit World No.3 Korean Sung Ji Hyun 21-19, 21-15. She will play Scotland's Kirsty Gilmour in the last eight. Sindhu, who twice won a bronze medal at the 2013 and 2014 editions, survived a scare against Hong Kong's Cheung Ngan Yi before prevailing 19-21, 23-21, 21-17 in a thrilling women's singles match that lasted an hour and 27 minutes.