Commonwealth Games gold medallist Kashyap failed to pass the Asiad test as he lost to World No.1 Lee Chong Wei 0-2 in the pre-quarterfinals at the Gyeyang Gymnasium, while Saina fizzled out after winning the first game against China's Yihan Wang 21-18 9-21 7-21 in her quarterfinal encounter.
India's K Srikanth also lost out in the men's singles pre-quarterfinals after losing a hard-fought battle against Wanho Son of South Korea 2-1 in an hour and seven minutes.
Saina kept herself within touching distance as she picked four points on the trot from 11-15 to not only claw back but wrest the lead 16-15.
The duo was then engaged in an energy-sapping rally which Saina won with a brilliant net play and carried on the momentum to win a closely contested opening game.
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The Indian, however, could not maintain the aggression, even as Yihan surged ahead 8-5.
A couple of sharp smashes by Yihan swelled her lead and Saina's unforced errors gave the Chinese a cushion of 17-8 points. Saina completely failed to control the shuttle and soon trailed 8-20. Another rally and an easy point saw Yihan roar back into the contest.
The third game looked like a mere formality as Yihan dictated terms to pocket the match and end Saina's misery, even as coach Vimal Kumar looked on with disappointment.