# Jung Jae-sung

Jung Jae-sung (also spelled Chung Jae-sung; Korean: 정재성; Hanja: 鄭在成; Korean pronunciation:; 25 August 1982 – 9 March 2018) was a South Korean professional badminton player who specialized in men's doubles.
Together with his partner Lee Yong-dae, Jung spent forty weeks as World No. 1 in the men's doubles discipline between 2009 and 2012, winning eighteen BWF World Superseries tournaments and placing second at the BWF World Championships on two occasions in 2007 and 2009. 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.

## Career

Jung was born on 25 August 1982 in Jeonju, North Jeolla Province. He started playing badminton at 7, at his local elementary school. He entered the South Korea national badminton team in 2001.
In 2000, Jung was part of the Korean national junior team competed at the World Junior Championships in Guangzhou, China, and Asian Junior Championships in Kyoto, Japan. In Guangzhou, he won the mixed team bronze after his team lost 2–3 to China, and in Kyoto, he won the boys' doubles silver and boys' team bronze.
In 2003, Jung, who represented Wonkwang University, won the men's doubles title at the National Championships in Gyeonggi partnered with Lee Jae-jin. In 2004, he and Lee Jae-jin retained their title, and in 2006, Jung repeated his success partnered with Lee Yong-dae.
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. In 2006, Jung won the Thailand Open together with Lee Yong-dae; they had a walkover in the final against compatriots Lee Jae-jin, with whom Jung won the last Thailand Open, and Hwang Ji-man. 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. In the team event, South Korea lost to China in the final 2–3, thus gaining Jung a silver medal.
In 2007, Jung and Lee Yong-dae participated in the Malaysia Open, the first ever BWF Super Series event. There they got through the first round but had to resign due to injury. However a week later they blew away competition to take the first prize at the Korea Open. Jung and Lee lost to Lee Jae-jin and Hwang Ji-man in the final of the German Open. Jung participated to the 2007 Sudirman Cup with the South Korea team. The team lost to China in the semi-finals with a score of 0–3. In July, after a period of disappointing results in men's doubles, Lee became runner-up with Jung at the Thailand Open, losing to Lee Jae-jin and Hwang Ji-man. Not much later, the pair went on to take the silver medal in the 2007 BWF World Championships. They were defeated in the final by Markis Kido and Hendra Setiawan of Indonesia, 19–21, 19–21. The rest of the year also resulted in quite disappointing achievements, not getting past quarterfinals in any major events, except in the French Open. Jung and Lee there lost to the eventual winners, Cai Yun and Fu Haifeng of China.
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. In South Korea, things went a bit better, achieving a quarterfinal. There they lost to eventual runners-up Luluk Hadiyanto and Alvent Yulianto of Indonesia. More than a month later, Jung and Lee came back with a bang to win the All England Open, beating Malaysians Choong Tan Fook and Lee Wan Wah in a thrilling semi-final (coming back from a 16–20 deficit in the third game) and compatriots Lee Jae-jin and Hwang Ji-man in the finals. A week later, the pair were victorious in the Swiss Open too. At the Asian Championships Jung and Lee gained the gold medal, beating Candra Wijaya and Nova Widianto of Indonesia in the final. He competed at the Thomas Cup, helped his team reach the final round, where Jung and Lee were the only ones to score a point for South Korea against China in the final, which ended in a 3–1 win for China. In November, Jung also won the 2008 China Open Super Series.

### 2008 Olympic Games

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. His partner went on to get the gold medal in mixed doubles.

### 2012 Olympic Games

At the London Olympics, Jung, together with Lee, won the men's doubles bronze medal. The pair who were seeded two, advanced to the knock-out stage after placing first, won three matches in group D stage. They lost the match in the semi-final match against Mathias Boe and Carsten Mogensen of Denmark, and in the bronze medal match, they beat the Malaysian pair Koo Kien Keat and Tan Boon Heong in straight games. This was Jung's final tournament.

## Death

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

## Achievements
### Olympic Games

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2012 | Wembley Arena, London, Great Britain | Lee Yong-dae | Koo Kien Keat Tan Boon Heong | 23–21, 21–10 | Bronze |

### BWF World Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2007 | Putra Indoor Stadium, Kuala Lumpur, Malaysia | Lee Yong-dae | Markis Kido Hendra Setiawan | 19–21, 19–21 | Silver |
| 2009 | Gachibowli Indoor Stadium, Hyderabad, India | Lee Yong-dae | Cai Yun Fu Haifeng | 18–21, 21–16, 26–28 | Silver |
| 2011 | Wembley Arena, London, England | Lee Yong-dae | Cai Yun Fu Haifeng | 18–21, 14–21 | Bronze |

### Asian Games

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2006 | Aspire Hall 3, Doha, Qatar | Lee Yong-dae | Luluk Hadiyanto Alvent Yulianto | 25–23, 18–21, 19–21 | Bronze |
| 2010 | Tianhe Gymnasium, Guangzhou, China | Lee Yong-dae | Markis Kido Hendra Setiawan | 15–21, 21–13, 18–21 | Bronze |

### Asian Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2005 | Gachibowli Indoor Stadium, Hyderabad, India | Lee Jae-jin | Markis Kido Hendra Setiawan | 11–15, 7–15 | Silver |
| 2008 | Bandaraya Stadium, Johor Bahru, Malaysia | Lee Yong-dae | Nova Widianto Candra Wijaya | 21–16, 21–18 | Gold |

### Asian Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2000 | Nishiyama Park Gymnasium, Kyoto, Japan | Lee Jae-jin | Sang Yang Zheng Bo | 16–17, 15–11, 12–15 | Silver |

### BWF Superseries

The BWF Superseries, launched on 14 December 2006 and implemented in 2007, is a series of elite badminton tournaments, sanctioned by Badminton World Federation (BWF). BWF Superseries has two level such as Superseries and Superseries Premier. A season of Superseries features twelve tournaments around the world, which introduced since 2011, with successful players invited to the Superseries Finals held at the year end.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2007 | Korea Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | 21–16, 21–15 | Winner |
| 2008 | All England Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | 20–22, 21–19, 21–18 | Winner |
| 2008 | Swiss Open | Lee Yong-dae | Markis Kido Hendra Setiawan | 17–21, 21–16, 21–13 | Winner |
| 2008 | China Open | Lee Yong-dae | Mathias Boe Carsten Mogensen | 17–21, 21–17, 21–13 | Winner |
| 2008 | Hong Kong Open | Lee Yong-dae | Mohd Zakry Abdul Latif Mohd Fairuzizuan Mohd Tazari | 25–23, 19–21, 22–20 | Winner |
| 2008 | World Superseries Masters Finals | Lee Yong-dae | Koo Kien Keat Tan Boon Heong | 18–21, 14–21 | Runner-up |
| 2009 | Malaysia Open | Lee Yong-dae | Hendra Aprida Gunawan Alvent Yulianto | 18–21, 21–14, 21–14 | Winner |
| 2009 | Korea Open | Lee Yong-dae | Mathias Boe Carsten Mogensen | 12–21, 22–24 | Runner-up |
| 2009 | Indonesia Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–15, 21–18 | Winner |
| 2009 | Hong Kong Open | Lee Yong-dae | Lars Paaske Jonas Rasmussen | 13–21, 21–15, 21–8 | Winner |
| 2009 | China Open | Lee Yong-dae | Koo Kien Keat Tan Boon Heong | 21–13, 19–21, 21–18 | Winner |
| 2009 | World Superseries Masters Finals | Lee Yong-dae | Mathias Boe Carsten Mogensen | 21–15, 21–15 | Winner |
| 2010 | Korea Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–11, 14–21, 21–18 | Winner |
| 2010 | China Open | Lee Yong-dae | Chai Biao Zhang Nan | 21–15, 21–12 | Winner |
| 2010 | World Superseries Finals | Lee Yong-dae | Mathias Boe Carsten Mogensen | 17–21, 15–21 | Runner-up |
| 2011 | Korea Open | Lee Yong-dae | Mathias Boe Carsten Mogensen | 21–6, 21–13 | Winner |
| 2011 | China Masters | Lee Yong-dae | Cai Yun Fu Haifeng | 21–17, 21–10 | Winner |
| 2011 | Denmark Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–16, 21–17 | Winner |
| 2011 | French Open | Lee Yong-dae | Cai Yun Fu Haifeng | 14–21, 21–15, 21–11 | Winner |
| 2011 | Hong Kong Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–14, 22–24, 19–21 | Runner-up |
| 2012 | Korea Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–18, 17–21, 19–21 | Runner-up |
| 2012 | All England Open | Lee Yong-dae | Cai Yun Fu Haifeng | 21–23, 21–9, 21–14 | Winner |
| 2012 | Indonesia Open | Lee Yong-dae | Mathias Boe Carsten Mogensen | 23–21, 19–21, 21–11 | Winner |
    BWF Superseries Finals tournament
    BWF Superseries Premier tournament
    BWF Superseries tournament

### BWF Grand Prix

The BWF Grand Prix has two levels, the BWF Grand Prix and Grand Prix Gold. It is a series of badminton tournaments sanctioned by the Badminton World Federation (BWF) since 2007. The World Badminton Grand Prix has been sanctioned by the International Badminton Federation since 1983.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2005 | Thailand Open | Lee Jae-jin | Lars Paaske Jonas Rasmussen | 15–11, 15–5 | Winner |
| 2006 | German Open | Lee Yong-dae | Robert Blair Anthony Clark | 15–11, 15–6 | Winner |
| 2006 | Chinese Taipei Open | Lee Yong-dae | Cai Yun Fu Haifeng | 14–21, 18–21 | Runner-up |
| 2006 | Thailand Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | Walkover | Winner |
| 2007 | German Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | 18–21, 20–22 | Runner-up |
| 2007 | Thailand Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | 19–21, 21–19, 9–21 | Runner-up |
| 2008 | German Open | Lee Yong-dae | Hwang Ji-man Lee Jae-jin | 13–21, 19–21 | Runner-up |
| 2010 | Chinese Taipei Open | Lee Yong-dae | Cho Gun-woo Kwon Yi-goo | 21–10, 21–16 | Winner |
| 2010 | Korea Grand Prix | Lee Yong-dae | Ko Sung-hyun Yoo Yeon-seong | 18–21, 21–18, 27–27 | Winner |
| 2011 | German Open | Lee Yong-dae | Kim Gi-jung Kim Sa-rang | 21–19, 18–21, 21–11 | Winner |
| 2011 | Swiss Open | Lee Yong-dae | Ko Sung-hyun Yoo Yeon-seong | 17–21, 16–21 | Runner-up |
| 2011 | Thailand Open | Lee Yong-dae | Hendra Aprida Gunawan Alvent Yulianto | 24–22, 21–14 | Winner |
| 2011 | Chinese Taipei Open | Lee Yong-dae | Ko Sung-hyun Yoo Yeon-seong | 21–23, 17–21 | Runner-up |
| 2011 | Korea Grand Prix Gold | Lee Yong-dae | Ko Sung-hyun Yoo Yeon-seong | 15–21, 22–24 | Runner-up |
| 2012 | German Open | Lee Yong-dae | Hong Wei Shen Ye | 19–21, 21–18, 19–21 | Runner-up |
    BWF Grand Prix Gold tournament
    BWF & IBF Grand Prix tournament

### BWF International Challenge/Series/Satellite

Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2004 | Vietnam Satellite | Hwang Ji-man | Rian Sukmawan Yoga Ukikasah | 15–17, 7–15 | Runner-up |
| 2008 | Korea International | Lee Yong-dae | Cho Gun-woo Yoo Yeon-seong | 21–16, 26–24 | Winner |
| 2009 | Korea International | Lee Yong-dae | Ko Sung-hyun Yoo Yeon-seong | 21–19, 15–21, 21–15 | Winner |
    BWF International Challenge tournament
    BWF International Series tournament