Dae-sung Koo
| Koo Dae-sung | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pitcher | ||||||||||||
| Born: August 2, 1969 Daejeon, South Korea | ||||||||||||
Batted: Left Threw: Left | ||||||||||||
| Professional debut | ||||||||||||
| KBO: May 1, 1993, for the Binggrae Eagles | ||||||||||||
| NPB: March 24, 2001, for the Orix BlueWave | ||||||||||||
| MLB: April 4, 2005, for the New York Mets | ||||||||||||
| Last appearance | ||||||||||||
| KBO: September 3, 2010, for the Hanwha Eagles | ||||||||||||
| NPB: September 27, 2004, for the Orix BlueWave | ||||||||||||
| MLB: August 20, 2005, for the New York Mets | ||||||||||||
| KBO statistics | ||||||||||||
| Win–loss record | 67–71 | |||||||||||
| Saves | 214 | |||||||||||
| Earned run average | 2.85 | |||||||||||
| Strikeouts | 1,221 | |||||||||||
| NPB statistics | ||||||||||||
| Win–loss record | 24–34 | |||||||||||
| Saves | 10 | |||||||||||
| Earned run average | 3.86 | |||||||||||
| Strikeouts | 504 | |||||||||||
| MLB statistics | ||||||||||||
| Win–loss record | 0–0 | |||||||||||
| Earned run average | 3.91 | |||||||||||
| Strikeouts | 23 | |||||||||||
| Stats at Baseball Reference | ||||||||||||
| Teams | ||||||||||||
| Career highlights and awards | ||||||||||||
| ||||||||||||
Medals
| ||||||||||||
| Dae-sung Koo | |
| Hangul | 구대성 |
|---|---|
| Hanja | 具臺晟 |
| RR | Gu Daeseong |
| MR | Ku Taesŏng |
Koo Dae-sung (Korean: 구대성; Hanja: 具臺晟; born August 2, 1969) is a Korean former professional baseball pitcher. A left-handed pitcher, Koo formerly played for the Hanwha Eagles in the KBO League, as well as the New York Mets of Major League Baseball and the Orix BlueWave of Nippon Professional Baseball. He announced his retirement from Korean baseball on August 15, 2010. He last played for Geelong-Korea in the Australian Baseball League. Since November 2025, Koo has served as the manager for the Shanghai Dragons of Chinese Professional Baseball.