World No. 2 Saina produced a determined performance to edge out former world no. 5 Bae Yeon Ju 22-20 17-21 21-13 in the women's singles but no other Indian could outwit the Koreans as their campaign ended on a disappointing note.
India were pegged back 0-1 after men's doubles pair of Pranaav Jerry Chopra and Akshay Dewalkar went down 10-21 19-21 to world no. 8 combination of Kim Gi Jung and Kim Sa Rang.
2011 World Championship bronze medallist combo of Jwala Gutta and Ashwini Ponnappa then conjured up hopes of a win before going down fighting 21-18 12-21 12-21 to Chang Ye Na and Jung Kyung Eun.
India's mixed doubles pair of Manu Attri and Sikki Reddy N then lost 12-21 20-22 to Kim Ha Na and Ko Sung Hyun in the final match to end the agony for India.
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In women's singles, Korea fielded Ju Bae ahead of world no. 7 Sung Ji Hyun against Saina probably because of her better record against the Indian and the ploy seemed to be working initially.
Ju troubled Saina initially to enter the break with a 11-9 advantage. The Indian, however, kept breathing down her neck and eventually pocketed the game from 18-20 down with four straight points.
In the second game, Saina managed a slender 11-10 lead at the interval but Ju Bae started dominating the rallies and after a intense battle, the Korean broke off at 14-14 to roar back into contest with a six-point burst.
Chief national coach Pullela Gopichand then handed Commonwealth Games champion Kashyap the responsibility of taming Son, whom he had beaten in straight games at the Singapore Open last month.