Indian shuttlers K.Srikanth and R M V Gurusaidutt have secured semi-final berths in men's singles of the Kumpoo Macau Open Badminton Grand Prix Gold. Srikanth outclassed Wei Nan of Hongkong 16-21, 21-19, 21-19 in just 62 minutes today. In other action, Gurusaidutt defeated Chan Yan Kit in a 34 minute match that ended in just 2 games with a concluding margin of 21-11, 21-14. The semi final matches will be played tomorrow and the final on Sunday.