While Kidambi Srikanth turns up for the world championships after three successive final finishes, PV Sindhu enters the event after a couple of quarterfinal finishes in the previous Super Series events of this season.
Saina has got a bye in the opening round and will take on the winner of the match between Switzerland's Sabrina Jaquet and Ukraine's Natalya Voytsekh with a potential clash against Korea's second seed Sung Ji Hyun for a place in the pre-quarterfinals.
Olympic medallists PV Sindhu and Saina Nehwal will play in the World Championships in Glasgow, beginning August 21.
Newly-crowned Indonesia Open winner Kidambi Srikanth continued his rampaging run to advance to the men's singles semifinals
Kidambi Srikanth and Sai Praneeth had clashed in the final of Singapore Open in April with the latter emerging victorious.
Saina Nehwal, Kidambi Srikanth and B Sai Praneeth progressed to the second round but four others were knocked out in the first round itself.
Prannoy beat the world No 1 Malaysian in 40 minutes to reach the quarter-finals while Saina and Sindhu were shown the door.
Fourth seed PV Sindhu brushed aside World No. 20 Pornpawee Chochuwong 21-12 21-19, while world No. 11 Saina rallied her way to a 17-21 21-18 21-12 win over the eighth-seeded Thai Ratchanok Intanon in women's singles.
B Sai Praneeth took 36 minutes to get the better of Thai opponent in the semifinals; Saina lost a tough battle to fall in the last-four stage in Bangkok.
Saina and Sindhu were in action on Monday when they teamed up for their employers Bharat Petroleum Corporation Limited (BPCL) in a doubles rubber at the 38th PSPB inter-unit badminton championship in Bangalore.
The world number three Indian defeated Dinar Dyah Ayustine of Indonesia 21-8 21-18 in a lop-sided encounter that lasted just 31 minutes, while London Games bronze medallist lost to Japan's Sayaka Sato 19-21 21-16 21-18 in the women's singles after slogging it for more than an hour.
After winning the India Open Superseries, PV Sindhu had suffered a shock defeat in the opening round of the Malaysia Open Superseries.
Akhilesh Das Gupta suffered a massive heart attack and was rushed to the Lari hospital where he died in the wee hours. He is survived by his wife, daughter and son.
PV Sindhu recently defeated Saina Nehwal during the India Open Superseries that was held in New Delhi
In 2017, PV Sindhu first won the Syed Modi International tournament and then defeated Carolina Marin, her Olympic nemesis, in straight games in New Delhi to win the India Open Superseries.
PV Sindhu and Saina Nehwal suffered shock defeats in their opening round matches to exit the Malaysia Open Superseries tournament.
PV Sindhu overcame Saina Nehwal 21-16, 22-20 at the Siri Fort Complex in Delhi.
PV Sindhu will face South Korea's Sung Ji Hyun in the semi-final on Saturday.
