# Yoo Yeon-seong

Yoo Yeon-seong (Korean pronunciation:; born 19 August 1986) is a South Korean professional badminton player.
He specializes in doubles events and was ranked as high as No. 2 worldwide with his former partner, Ko Sung-hyun. The two also competed at the 2012 Summer Olympics. For a long time he played mixed doubles with Kim Min-jung, but later switched partners to play with Chang Ye-na, starting in 2011. Starting in late 2013, his men's doubles partner was Lee Yong-dae. Together, they reached a world ranking of No.1 in August 2014.
Yoo was among 4 players reported to be retiring and hanging up his national team jersey after the Rio Olympics but during the Korea Open that September, it was revealed that he would be continuing to play on the national team after his partner Lee Yong-dae retired. Yoo said that he wants to spend more time with his family. After he and Lee won the Korea Open title, Yoo played an additional 9 international ranking events but his name was finally removed from the Korean national team list a few weeks after the 2017 Singapore Open.

## Achievements
### BWF World Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | Wembley Arena, London, England | Ko Sung-hyun | Cai Yun Fu Haifeng | 22–24, 16–21 | Silver |
| 2014 | Ballerup Super Arena, Copenhagen, Denmark | Lee Yong-dae | Ko Sung-hyun Shin Baek-cheol | 20–22, 23–21, 18–21 | Silver |
| 2015 | Istora Senayan, Jakarta, Indonesia | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 17–21, 19–21 | Bronze |

### Asian Games

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2014 | Gyeyang Gymnasium, Incheon, South Korea | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 16–21, 21–16, 17–21 | Silver |

### Asia Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2009 | Suwon Indoor Stadium, Suwon, South Korea | Ko Sung-hyun | Markis Kido Hendra Setiawan | 18–21, 24–26 | Silver |
| 2010 | Siri Fort Indoor Stadium, New Delhi, India | Cho Gun-woo | Chen Hung-ling Lin Yu-lang | 21–19, 12–21, 21–17 | Gold |
| 2014 | Gimcheon Indoor Stadium, Gimcheon, South Korea | Shin Baek-choel | Li Junhui Liu Yuchen | 22–20, 21–17 | Gold |
| 2015 | Wuhan Sports Center Gymnasium, Wuhan, China | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 18–21, 24–22, 21–19 | Gold |
| 2016 | Wuhan Sports Center Gymnasium, Wuhan, China | Lee Yong-dae | Li Junhui Liu Yuchen | 21–14, 28–26 | Gold |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2009 | Suwon Indoor Stadium, Suwon, South Korea | Kim Min-jung | Lee Yong-dae Lee Hyo-jung | 12–21, 15–21 | Silver |
| 2010 | Siri Fort Indoor Stadium, New Delhi, India | Kim Min-jung | Chan Peng Soon Goh Liu Ying | 17–21, 22–20, 19–21 | Silver |

### Summer Universiade

Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2007 | Thammasat University, Pathum Thani, Thailand | Kim Min-jung | Fang Chieh-min Cheng Wen-hsing | 21–19, 13–21, 21–17 | Gold |

### World Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2004 | Minoru Arena, Richmond, Canada | Jeon Jun-bum | Hoon Thien How Tan Boon Heong | 10–15, 14–17 | Bronze |

### Asian Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2004 | Hwacheon Indoor Stadium, Hwacheon, South Korea | Jeon Jun-bum | Jung Jung-young Lee Yong-dae | 11–15, 3–15 | Silver |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2004 | Hwacheon Indoor Stadium, Hwacheon, South Korea | Ha Jung-eun | Shen Ye Feng Chen | 11–15, 6–15 | Silver |

### BWF Superseries (19 titles, 10 runners-up)

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 |
| 2010 | Swiss Open | Ko Sung-hyun | Koo Kean Keat Tan Boon Heong | 21–18, 21–16 | Winner |
| 2010 | China Masters | Ko Sung-hyun | Cai Yun Fu Haifeng | 14–21, 19–21 | Runner-up |
| 2010 | Hong Kong Open | Ko Sung-hyun | Markis Kido Hendra Setiawan | 21–19, 14–21, 23–21 | Winner |
| 2011 | China Open | Ko Sung-hyun | Mathias Boe Carsten Mogensen | 17–21, 13–21 | Runner-up |
| 2012 | India Open | Ko Sung-hyun | Bodin Isara Maneepong Jongjit | 17–21, 21–14, 14–21 | Runner-up |
| 2012 | Singapore Open | Ko Sung-hyun | Markis Kido Hendra Setiawan | 20–22, 21–11, 6–21 | Runner-up |
| 2012 | Denmark Open | Shin Baek-choel | Koo Kien Keat Tan Boon Heong | 19–21, 21–11, 21–19 | Winner |
| 2013 | Denmark Open | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 21–19, 21–16 | Winner |
| 2013 | China Open | Lee Yong-dae | Hoon Thien How Tan Wee Kiong | 21–13, 21–12 | Winner |
| 2013 | Hong Kong Open | Lee Yong-dae | Kim Gi-jung Kim Sa-rang | 12–21, 21–15, 21–18 | Winner |
| 2014 | Japan Open | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 21–12, 26–24 | Winner |
| 2014 | Indonesia Open | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 21–15, 21–17 | Winner |
| 2014 | Australian Open | Lee Yong-dae | Lee Sheng-mu Tsai Chia-hsin | 21–14, 21–18 | Winner |
| 2014 | Denmark Open | Lee Yong-dae | Fu Haifeng Zhang Nan | 13–21, 23–25 | Runner-up |
| 2014 | China Open | Lee Yong-dae | Chai Biao Hong Wei | 21–14, 21–15 | Winner |
| 2014 | Dubai World Superseries Finals | Lee Yong-dae | Chai Biao Hong Wei | 19–21, 21–19, 21–16 | Winner |
| 2015 | Malaysia Open | Lee Yong-dae | Mohammad Ahsan Hendra Setiawan | 21–14, 15–21, 21–23 | Runner-up |
| 2015 | Australian Open | Lee Yong-dae | Liu Cheng Lu Kai | 21–16, 21–17 | Winner |
| 2015 | Japan Open | Lee Yong-dae | Fu Haifeng Zhang Nan | 21–19, 29–27 | Winner |
| 2015 | Korea Open | Lee Yong-dae | Kim Gi-jung Kim Sa-rang | 21–16, 21–12 | Winner |
| 2015 | Denmark Open | Lee Yong-dae | Liu Cheng Lu Kai | 21–8, 21–14 | Winner |
| 2015 | French Open | Lee Yong-dae | Mads Conrad-Petersen Mads Pieler Kolding | 21–14, 21–19 | Winner |
| 2015 | Hong Kong Open | Lee Yong-dae | Mathias Boe Carsten Mogensen | 21–7, 18–21, 21–18 | Winner |
| 2016 | Indonesia Open | Lee Yong-dae | Chai Biao Hong Wei | 13–21, 21–13, 21–16 | Winner |
| 2016 | Korea Open | Lee Yong-dae | Li Junhui Liu Yuchen | 15–21, 22–20, 21–18 | Winner |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2011 | China Masters | Jang Ye-na | Xu Chen Ma Jin | 13–21, 16–21 | Runner-up |
| 2013 | Singapore Open | Eom Hye-won | Tontowi Ahmad Liliyana Natsir | 12–21, 12–21 | Runner-up |
| 2013 | China Masters | Eom Hye-won | Zhang Nan Zhao Yunlei | 18–21, 12–21 | Runner-up |
| 2014 | China Open | Eom Hye-won | Zhang Nan Zhao Yunlei | 25–23, 14–21, 18–21 | Runner-up |
    BWF Superseries Finals tournament
    BWF Superseries Premier tournament
    BWF Superseries tournament

### BWF Grand Prix (12 titles, 5 runners-up)

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 sanctioned by International Badminton Federation (IBF) since 1983.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2006 | Vietnam Open | Jeon Jun-bum | Chew Choon Eng Hong Chieng Hun | 21–19, 21–19 | Winner |
| 2010 | Macau Open | Ko Sung-hyun | Hendra Aprida Gunawan Alvent Yulianto | 21–17, 21–15 | Winner |
| 2010 | Korea Grand Prix | Ko Sung-hyun | Jung Jae-sung Lee Yong-dae | 21–18, 18–21, 25–27 | Runner-up |
| 2011 | Swiss Open | Ko Sung-hyun | Jung Jae-sung Lee Yong-dae | 21–17, 21–16 | Winner |
| 2011 | Chinese Taipei Open | Ko Sung-hyun | Jung Jae-sung Lee Yong-dae | 23–21, 21–17 | Winner |
| 2011 | Macau Open | Ko Sung-hyun | Chai Biao Guo Zhendong | 19–21, 19–21 | Runner-up |
| 2011 | Korea Grand Prix Gold | Ko Sung-hyun | Jung Jae-sung Lee Yong-dae | 21–15, 24–22 | Winner |
| 2013 | Thailand Open | Shin Baek-cheol | Vladimir Ivanov Ivan Sozonov | 18–21, 21–15, 21–14 | Winner |
| 2014 | Korea Grand Prix | Lee Yong-dae | Ko Sung-hyun Shin Baek-cheol | 21–18, 21–19 | Winner |
| 2016 | German Open | Lee Yong-dae | Ko Sung-hyun Shin Baek-cheol | 22–20, 18–21, 17–21 | Runner-up |
| 2016 | China Masters | Lee Yong-dae | Kim Gi-jung Kim Sa-rang | 21–17, 21–14 | Winner |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2006 | Vietnam Open | Lee Jung-mi | Kang Myeong-won Kang Joo-young | 21–17, 17–21, 21–18 | Winner |
| 2010 | Korea Grand Prix | Kim Min-jung | Choi Young-woo Eom Hye-won | 21–15, 21–13 | Winner |
| 2011 | Korea Grand Prix Gold | Jang Ye-na | Kim Ki-jung Jung Kyung-eun | 21–17, 21–19 | Winner |
| 2012 | Korea Grand Prix Gold | Jang Ye-na | Shin Baek-cheol Eom Hye-won | 21–11, 18–21, 23–25 | Runner-up |
| 2013 | Chinese Taipei Open | Eom Hye-won | Shin Baek-cheol Jang Ye-na | 20–22, 21–12, 16–21 | Runner-up |
| 2013 | Korea Grand Prix Gold | Jang Ye-na | Kang Ji-wook Choi Hye-in | 21–13, 21–11 | Winner |
    BWF Grand Prix Gold tournament
    BWF & IBF Grand Prix tournament

### BWF International Challenge/Series (4 titles, 6 runners-up)

Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2003 | Hungarian International | Jeon Jun-bum | Hwang Ji-man Lee Jae-jin | 12–15, 12–15 | Runner-up |
| 2006 | Mongolian Satellite | Jeon Jun-bum | Kim Ki-jung Lee Jung-hwan | 21–14, 21–14 | Winner |
| 2007 | Vietnam International | Cho Gun-woo | Mohammad Ahsan Bona Septano | 15–21, 19–21 | Runner-up |
| 2008 | Korea International | Cho Gun-woo | Jung Jae-sung Lee Yong-dae | 16–21, 24–26 | Runner-up |
| 2009 | Korea International | Ko Sung-hyun | Jung Jae-sung Lee Yong-dae | 19–21, 21–15, 15–21 | Runner-up |
| 2018 | Dubai International | Kim Sang-soo | Lim Khim Wah Tarun Kona | 21–16, 21–9 | Winner |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2006 | Mongolian Satellite | Kim Min-jung | Lee Jung-hwan Yoo Hyun-young | 21–13, 21–15 | Winner |
| 2007 | Cheers Asian Satellite | Ha Jung-eun | Cho Gun-woo Kim Min-jung | 19–21, 15–21 | Runner-up |
| 2007 | Indonesia International | Kim Min-jung | Tontowi Ahmad Yulianti CJ | 16–21, 21–15, 9–21 | Runner-up |
| 2018 | Dubai International | Park So-young | Denis Grachev Ekaterina Bolotova | 21–14, 17–21, 21–14 | Winner |
    BWF International Challenge tournament
    BWF International Series tournament

## Record against selected opponents

Men's doubles results with Ko Sung-hyun against Super Series finalists, World Championships semifinalists, and Olympic quarterfinalists.
* Cai Yun & Fu Haifeng 1–7
* Chai Biao & Guo Zhendong 1-2
* Guo Zhendong & Xu Chen 2–0
* Fang Chieh-min & Lee Sheng-mu 3–1
* Mathias Boe & Carsten Mogensen 0–6
* Lars Påske & Jonas Rasmussen 1–1
* Jonas Rasmussen & Mads Conrad-Petersen 1–0
* Mohammad Ahsan & Bona Septano 5–1
* Alvent Yulianto Chandra & Hendra Aprida Gunawan 4–1
* Markis Kido & Hendra Setiawan 2–3
* Hirokatsu Hashimoto & Noriyasu Hirata 4–2
* Jung Jae-sung & Lee Yong-dae 4–4
* Cho Gun-woo & Shin Baek-cheol 1–0
* Choong Tan Fook & Lee Wan Wah 1–0
* Koo Kien Keat & Tan Boon Heong 6–1
* Adam Cwalina & Michał Łogosz 1–0
* Bodin Isara & Maneepong Jongjit 0–3
* Howard Bach & Tony Gunawan 3–1