Yoo Yong-sung

Yoo Yong -sung (Korean 유용성; born October 25, 1974 in Dangjin ) is a South Korean badminton players.

Yoo won in 1997 and 2002, the men's doubles of the Swiss Open with his partner Lee Dong -soo.

Yoo played at the 2004 Olympics in the men's doubles with partner Lee Dong -soo. You defeated in the first round José Antonio Crespo and Sergio Llopis of Spain and in the second round Luluk Hadiyanto and Alvent Yulianto from Indonesia. In the quarterfinals, Choong Tan Fook and Lee Yoo and Lee Wan Wah defeated Malaysia with 11:15, 15:11, 15:9. They won the semifinal against Jens Eriksen and Martin Lundgaard Hansen of Denmark 9:15, 15:5, 15:3, but lost the final against the Korean compatriots Kim Dong -moon and Ha Tae- kwon 15:11, 15:4 to finally get the silver medal.