Wang Xiaoli
At the 2012 Summer Olympics, Jung and her partner Kim Ha-na, along with Ha Jung-eun and Kim Min-jung of South Korea, Wang Xiaoli and Yu Yang of China, and Meiliana Jauhari and Greysia Polii of Indonesia were disqualified from the competition for "not using one's best efforts to win a match" and "conducting oneself in a manner that is clearly abusive or detrimental to the sport" following matches the previous evening during which they were accused of trying to lose in order to manipulate the draw. Jung and her partner Kim Ha-na played against China's Wang Xiaoli and Yu Yang. South Korea filed an appeal to the Badminton World Federation at the Olympics, but it was rejected.