Ko Sung-hyun

Ko Sung-hyun (; ; born 21 May 1987) is a South Korean badminton player affiliated with Gimcheon City Hall. He is a former world number 1 both in the men's and mixed doubles. Ko is a BWF World Champion, two time Badminton Asian Champion, and Asian Games gold medalist.

Ko started to get the attention of the World and Korean badminton when he won the bronze medal at the 2010 World Championships partnered with Ha Jung-eun. Competed in the men's doubles with Yoo Yeon-seong, Ko have achieved several milestones, including won the silver medals at the 2009 Asian and 2011 World Championships, reached a career high as world number 2 at the BWF world ranking. Ko and Yoo ended their partnerships after participating in 2012 London Olympics. Ko then topped the men's doubles BWF world ranking partnered with Lee Yong-dae in May 2013. Ko and Lee were a gold medalists at the 2013 Asian Championships and Summer Universiade.

Teamed-up with Shin Baek-cheol, Ko won the gold medal at the 2014 World Championships. Together with Kim Ha-na, Ko clinched the 2013 Asian Championships title and won his first Superseries title in the mixed doubles at the 2014 Australian Open. Ko and Kim participated at the 2016 Rio Olympics, reaching in to the quarter finals stage, and occupied the mixed doubles world number 1 in September 2016. Provided by Wikipedia