Defending champion Saina Nehwal will take on third seed Yihan Wang of China in the final of the Indonesian Open Super Series Badminton tournament today. In the semi-final in Jakarta yesterday, she recorded a hard-fought victory over Chinese Taipei's Shao Chieh Cheng. The fourth-seeded Indian won 21-14, 14-21, 21-17 in a 45-minute battle. Cheng had upset top seed Shixian Wang and seventh seed Xin Liu earlier in the tournament.