Career
She represented South of Korea in two editions of the Olympic Games (2000 and 2004), and also often played as an outside hitter and attacker. Collecting a total of three triumphs, two losses, and eight classification points in the preliminary pool, the South Koreans lost the quarterfinal match to the United States. squad, led by Kerri Walsh (who later turned into a beach volleyball player in the next three Olympics), with a five-score set of 24–26, 25–17, 23–25, 27–25, 14–16. During the fifth round of the match, Ku returned a ball down the left line that was called out and ended into a protest against the aggressive Americans.
After suffering a heavy defeat in the quarterfinals, the South Korean squad finished eighth in a classification round match against Croatia with a set score of 1–3.
When South of Korea hosted the 2002 Asian Games in Busan, Ku helped the South Koreans capture the silver medal in a final match against China with a set score of 1–3. At the 2004 Summer Olympics in Athens, Ku qualified for the second time as a member and captain of the South Korean squad in the women"s volleyball tournament after receiving an automatic berth from the Asian Championships.
Unable to improve a fair performance from Sydney, she and the rest of the South Korean team were defeated in the quarterfinal match against Russia with a unanimous set score of 0–3 (17–25, 15–25, 22–25). Ku was also appointed as the flag bearer for of Korea, along with former basketball coach Kim Sung-Ho, under a joint march in the opening ceremony.
