Saina Nehwal has entered the semi-finals of French Open Badminton tournament after a straight-game win over Thai teen Ratchanok Intanon in Paris.The world number three Indian won 22-20, 22-20 in a 42-minute clash during which she was given some anxious moments by the 17-year-old Thai, who is ranked 10th in the international list and seeded seventh in the event.Saina, fresh from her Denmark Open triumph last week, will now be up against fourth-seeded German Juliane Schenk, who powered past upcoming Chinese player Chen Xiao Jia 21-10 21-14.