Ace Indian shuttler Saina Nehwal sailed into the Korea Open Super Series quarterfinals after notching up a straight-game victory over Shao Chieh Cheng of Chinese Taipei in the second round in Seoul today. Fourth seed Saina registered a 21-14 21-10 win over Chengin a 36-minute battle in women's singles. The Indian will next take on the winner of the match between China's Yanjiao Jiangand Inthanon Ratchanok of Thailand.

Commonwealth Games gold medal-winning pair of Jwala Gutta and Ashwini Ponnappa, however, were defeated by the formidable combo of top seed Xiaoli Wang and Yang Yu of China 10-21 17-21in 34 minutes. Saina didn't break much sweat against the world number 11Cheng and tired her rival by engaging her in rallies.    

The World number four Indian opened a four-point leadfirst up and then stretched it to 10-2. Cheng registered five straight points and tried to give some fight but it was Saina who pocketed the game.    

In the second game, after lagging 0-3, Saina caught her opponent at the nets to draw level. A couple of unforced errors and a disputable line call, helped her rival to move to7-3. Saina engaged her opponent in long rallies and forced her to commit errors to move to 7-7 before taking the lead.

The World Championship silver medallist didn't get her shots right as a lot of her half smashes went into the net or outside as Saina went into the break leading 11-7. Saina ruled the roost after the break and moved to 14-8.The Indian varied the pace of the game and judged her rival well to gain points, reaching 20-9. Cheng earned a point with a smash but after she hit a shot outside, Saina easily pocketed the match.