Ace Indian shuttler Saina Nehwal notched up a hard-fought victory over Juan Gu of Singapore in the first round match of the Malaysian Open Super Series in Kuala Lumpur.Fourth seeded Saina managed to prevail over her Singaporean opponent 19-21, 21-14, and 21-15 in a 56-minute battle in the Women's Singles event.The Indian will next take on Shao Chieh Cheng of Chinese Taipei, who she had recently defeated in Korea Open Super Series in the second round.In the mixed doubles competition, V Diju and Jwala Gutta defeated the combo of Chayut Triyachart and Lei Yao of Singapore 21-13, 19-21, 21-16. Jwala and Diju will now face the Malaysian pair of Peng Soon Chan and Liu Ying Goh in the second round.However, Indian Men's Doubles pair of Rupesh Kumar and Sanave Thomas lost to fourth seeded Koo Kien Keat and Tan Boon Heong of Malaysia in the straight sets by 14-21, 13-21. In the Men's Singles competition, world championship quarter-finalist Ajay Jayaram conceded the first game advantage to go down to Simon Santoso of Indonesia 21-9, 18-21, 16-21.