Wang Yihan
Baun had claimed three titles in 2009, the Malaysia Open by beating the 1st seeded, Zhou Mi of Hongkong in the final, Korea Open by beating Pi Hongyan of France and Denmark Open by beating the 1st seeded, Wang Yihan of China. She played in 2009 All England Super Series as the first seed. She reached the final by beating two youngsters in the quarterfinal and semi-final, but failed to retain her title after losing to another youngster from China, Wang Yihan, in rubber set, 19–21, 23–21, 11–21.