| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Jeong•Dae-Hyeon |
| Used name | Jeong•Dae-Hyeon |
| Name order | Oriental |
| Original name | 정•대현 |
| Other names | Chong Tae-Hyon |
| Born | 10 November 1978 in Gunsan, Jeollanam (KOR) |
| Measurements | 185 cm / 98 kg |
| Affiliations | Kyung Hee University, Seoul (KOR) / SSG Landers, Incheon (KOR) |
| NOC | Republic of Korea |
| Medals | OG |
| Gold | 1 |
| Silver | 0 |
| Bronze | 1 |
| Total | 2 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2000 Summer Olympics | Baseball (Baseball/Softball) | KOR |
Jeong Dae-Hyeon | |||
| Baseball, Men (Olympic) | Republic of Korea | 3 | Bronze | |||
| 2008 Summer Olympics | Baseball (Baseball/Softball) | KOR |
Jeong Dae-Hyeon | |||
| Baseball, Men (Olympic) | Republic of Korea | 1 | Gold |