Ma Jin
In 2010, Ha with her women's doubles partner, Lee Kyung-won, became the semi-finalists in Korea Open Super Series, and with Ko Sung-hyun in the mixed event, they only reached the quarter-finals. In All England, Ha and Ko suffered a first-round defeat to Zheng Bo and Ma Jin of China 17–21 and 12–21. Meanwhile, Ha and Lee, seeded seventh, vanquished Indonesia's Shendy Puspa Irawati and Nitya Krishinda Maheswari in straight sets, 21–18 and 21–18, before bowing out to Chinese third seeds, Cheng Shu and Zhao Yunlei in the semi-finals.