Kook Hae-seong (Korean: 국해성; Hanja: 鞠海成; born 8 October 1989) is a South Korean professional baseball outfielder who played for the Doosan Bears of the KBO League.
[1] Upon graduation from high school, he made himself eligible for the 2008 KBO First-Year Player Draft, but went undrafted.
Instead, Kook signed a contract with the Chicago Cubs in 2007.
However, after the problem of elbow was found and the contract was broken, he was signed by the Doosan Bears as an undrafted free agent.
This biographical article relating to a South Korean baseball outfielder is a stub.