|NC Dinos – No. 37|
December 21, 1984 |
Seoul, South Korea
|2008, for the Doosan Bears|
(through July 18, 2013)
|Earned run average||3.70|
|Representing South Korea|
|Revised Romanization||Go Changseong|
Ko Chang-Sung (Hangul: 고창성, Hanja: 高昌成; born December 21, 1984 in Seoul, South Korea) is a sidearm pitcher playing for the NC Dinos in the Korea Baseball Organization. He bats and throws right-handed.
In the set-up role, Ko drew the attention of the league when he posted a 1.95 ERA and earned 16 holds in 2009. He enjoyed another great season as a setup man in 2010, when he earned 22 holds which was runner-up in the KBO league.  After the 2010 season, Ko was selected for the South Korean national baseball team to compete in the 2010 Asian Games where he won the gold medal. 
In 2011, Ko earned 14 holds but his ERA rose to 4.44. In 2012, he finished the season with a 8.62 ERA losing all ability to control his pitches. Ko was sent down to the second-tier team of the Bears in the middle of the 2012 season and traded to the NC Dinos after the season.
- Korea Baseball Organization career statistics from Koreabaseball.com