Yoo Yong-sung
Yoo Yong-sung is a retired badminton player from South Korea. He is two time Olympic silver medalist. Since 2019, he has become the first-ever foreign coach in the Chinese national team.
Achievements
Olympic Games
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 2004 | Goudi Olympic Hall, Athens, Greece |  Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 11–15, 4–15 | Silver |
| 2000 | The Dome, Sydney, Australia | Lee Dong-soo |  Tony Gunawan Candra Wijaya | 10–15, 15–9, 7–15 | Silver |
World Championships
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 1999 | Brøndby Arena, Copenhagen, Denmark | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 5–15, 5–15 | Silver |
| 1997 | Scotstoun Centre, Glasgow, Scotland | Lee Dong-soo | Candra Wijaya Sigit Budiarto | 11–15, 11–15 | Bronze |
| 1995 | Malley Sports Centre, Lausanne, Switzerland | Kim Dong-moon |  Jon Holst-Christensen Thomas Lund | 12–15, 2–15 | Bronze |
World Cup
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 1997 | Yogyakarta, Indonesia | Lee Dong-soo | Ricky Subagja Rexy Mainaky | 1–15, 15–10, 3–15 | Silver |
Asian Games
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 2002 | Gangseo Gymnasium, Busan, South Korea | Lee Dong-soo |  Pramote Teerawiwatana Tesana Panvisvas | 15–11, 15–6 | Gold |
| 1998 | Thammasat Gymnasium 2, Bangkok, Thailand | Lee Dong-soo | Pramote Teerawiwatana Siripong Siripool | 17–16, 6–15, 7–15 | Bronze |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 1994 | Tsuru Memorial Gymnasium, Hiroshima, Japan | Chung So-young | Kang Kyung-jin Jang Hye-ock | 15–10, 15–12 | Gold |
Asian Championships
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 2003 | Tennis Indoor Gelora Bung Karno, Jakarta, Indonesia | Lee Dong-soo | Markis Kido Hendra Setiawan | 15–10, 15–11 | Gold |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 1994 | Shanghai Gymnasium, Shanghai, China | Jang Hye-ock |  Wang Xiaoyuan Liu Jianjun | 6–15, 15–6, 5–15 | Bronze |
Asian Cup
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 1996 | Seoul, South Korea | Kim Dong-moon | Tony Gunawan Rudy Wijaya | 15–10, 15–8 | Gold |
East Asian Games
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 1997 | Busan, South Korea | Lee Dong-soo | Choi Ji-tae Kim Joong-suk | 15–2, 15–4 | Gold |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 1997 | Busan, South Korea | Lee Kyung-won | Bronze |
IBF World Grand Prix
The World Badminton Grand Prix sanctioned by International Badminton Federation since 1983.Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2003 | Hong Kong Open | Lee Dong-soo |  Choong Tan Fook Lee Wan Wah | 15–13, 6–15, 15–6 | Winner |
| 2003 | Korea Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 11–15, 6–15 | Runner-up |
| 2003 | All England Open | Lee Dong-soo | Sigit Budiarto Candra Wijaya | 7–15, 5–15 | Runner-up |
| 2003 | Thailand Open | Ha Tae-kwon | Sudket Prapakamol Patapol Ngernsrisuk | 15–8, 15–6 | Winner |
| 2002 | Indonesia Open | Lee Dong-soo |  Flandy Limpele Eng Hian | 15–10, 15–11 | Winner |
| 2002 | Korea Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 0–7, 4–7, 0–7 | Runner-up |
| 2002 | Swiss Open | Lee Dong-soo | Jens Eriksen Martin Lundgaard Hansen | 5–7, 7–5, 7–2, 7–5 | Winner |
| 2001 | Hong Kong Open | Lee Dong-soo |  Albertus Susanto Njoto Yau Kwun Yuen | 7–1, 7–2, 7–3 | Winner |
| 2001 | Korea Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 9–15, 4–15 | Runner-up |
| 2000 | Malaysia Open | Lee Dong-soo | Flandy Limpele Eng Hian | 9–15, 9–15 | Runner-up |
| 2000 | Japan Open | Lee Dong-soo | Tony Gunawan Candra Wijaya | 6–15, 7–15 | Runner-up |
| 2000 | All England Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 4–15, 15–13, 15–17 | Runner-up |
| 2000 | Korea Open | Lee Dong-soo | Ricky Subagja Rexy Mainaky | 15–8, 9–15, 15–4 | Winner |
| 1999 | China Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 16–17, 8–15 | Runner-up |
| 1999 | Japan Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 6–15, 4–15 | Runner-up |
| 1999 | All England Open | Lee Dong-soo | Tony Gunawan Candra Wijaya | 7–15, 5–15 | Runner-up |
| 1999 | Swedish Open | Lee Dong-soo | Ha Tae-kwon Kim Dong-moon | 11–15, 5–15 | Runner-up |
| 1998 | All England Open | Lee Dong-soo | Tony Gunawan Candra Wijaya | 15–10, 15–10 | Winner |
| 1997 | Vietnam Open | Lee Dong-soo | Ricky Subagja Rexy Mainaky | 11–15, 5–15 | Runner-up |
| 1997 | Thailand Open | Lee Dong-soo | Sigit Budiarto Candra Wijaya | 15–8, 17–14 | Winner |
| 1997 | Singapore Open | Lee Dong-soo | Sigit Budiarto Candra Wijaya | 8–15, 10–15 | Runner-up |
| 1997 | Indonesia Open | Lee Dong-soo | Sigit Budiarto Candra Wijaya | 9–15, 10–15 | Runner-up |
| 1997 | Swiss Open | Lee Dong-soo | Sigit Budiarto Candra Wijaya | 5–15, 15–11, 15–4 | Winner |
| 1995 | Canadian Open | Kim Dong-moon | Ha Tae-kwon Kang Kyung-jin | 15–12, 6–15, 8–15 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 1994 | Swedish Open | Jang Hye-ock |  Ron Michels Erica van den Heuvel | 15–9, 10–15, 18–17 | Winner |
| 1993 | China Open | Jang Hye-ock | Chen Xingdong Sun Man | 15–12, 9–15, 8–15 | Runner-up |
IBF International
Men's doubles| Year | Tournament | Partner | Opponent | Score | Result |
| 1999 | Australia International | Kim Dong-moon | Ha Tae-kwon Lee Dong-soo | 14–17, 15–9, 15–12 | Winner |