김민정
In 2011, Ha paired up with Lee Yong-dae again and they won the U.S. Open Grand Prix Gold title in July. In the women's doubles event, she also won the Grand Prix Gold title in Swiss, U.S., and Chinese Taipei partnered with Kim Min-jung. She and Kim was qualified at the Superseries Finals, and finished in the second place after losing a match to Wang Xiaoli and Yu Yang.