Indian shuttler B Sai Praneeth sailed into the semi-finals of the of the Thailand Grand Prix Gold in Bangkok today after registering a straight-game win over local player Kantaphon Wangcharoen.The third seeded Praneeth comfortably defeated the Thai 21-16, 21-17 in the men's singles section. It took 50 minutes for world number 24 Praneeth to complete the task against his opponent, ranked 102 in the world