[5] 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.

[6][7] Teamed-up with Shin Baek-cheol, Ko won the gold medal at the 2014 World Championships.

[9] 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.

[14] Successful players were invited to the Superseries Finals, which were held at the end of each year.