He was a two-time winner of the All-England Open, gold medalist at the 2008 Badminton Asian Championships, and won the bronze medal at the 2012 Olympic Games in the final tournament of his professional career.

[2] In 2003, Jung, who represented Wonkwang University, won the men's doubles title at the National Championships in Gyeonggi partnered with Lee Jae-jin.

[4] In 2005, Jung won the Thailand Open with his former partner Lee Jae-jin, beating the Danes Lars Paaske and Jonas Rasmussen in the finals.

At the Asian Games, Jung and Lee became bronze medalists after losing the semi-finals to Luluk Hadiyanto and Alvent Yulianto of Indonesia in the individual men's doubles event.

[citation needed] To start 2008, Jung, together with Lee, disappointingly lost to the unseeded pair of Simon Mollyhus and Anders Kristiansen in the second round of the Malaysia Open.

At the Asian Championships Jung and Lee gained the gold medal, beating Candra Wijaya and Nova Widianto of Indonesia in the final.

[citation needed] Not having participated in the two following Superseries events, supposedly because of their preparations for the Summer Olympics, Jung and Lee were disappointingly knocked out in the first round in Beijing.

[citation needed] On 9 March 2018, at the age of 35, Jung died suddenly of a heart attack at his home in Hwaseong after reportedly suffering from cardiac arrhythmia.

[5][6] His funeral was held on 11 March at Ajou University Hospital, with his longtime doubles partner Lee Yong-dae acting as a pallbearer.