The third seeded Praneeth comfortably beat Pannawit Thongnuam of Thailand 21-11 21-15 in their men's singles semifinal that lasted 36 minutes.
London Olympic bronze medallist Saina, however, had to bite the dust as she lost in straight games to Thailand's Busanan Ongbamrungphan 19-21 18-21 in 53 minutes.
The world number 11 Saina, who made the women's singles semi-final, was seeded second in the tournament, while her opponent entered the tournament as fourth seed.
In today's match, Praneeth started strongly and went into the first break with a four-point lead, paving the way for an easy win in the first game.
The Thai tried to stage a fightback in the second game but Praneeth was equal to the task, quickly reducing a three- point deficit.
Thongnuam made Praneeth work hard for his points, but the Indian had the last laugh.
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