Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 01/2003 - 12/2010 |  | Suwon Bluewings |  South Korea | Manager |
| 01/1998 - 12/1999 |  | Shenzhen FC |  China | Manager |
| 01/1991 - 12/1994 |  | Ulsan HD FC | South Korea | Manager |
National teams managed
| Season | Team | Position | |
|---|---|---|---|
| Friendlies 1998 | | South Korea | Manager |
| Friendlies 1997 | | South Korea | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/1983 - 06/1989 |  | Bayer Leverkusen |  Germany | Forward | |
| 07/1979 - 06/1983 |  | Eintracht Frankfurt | Germany | Forward | |
| 07/1978 - 06/1979 |  | SV Darmstadt 98 | Germany | Forward |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Europa League | 31 | 31 | - | 3 | 2.760 | 9 | - | - | 1 | - | - | » All matches |
| Cup Winners Cup | 6 | 6 | - | - | 570 | 1 | - | - | - | - | - | » All matches |
| Bundesliga | 308 | 306 | 2 | 32 | 26.697 | 98 | - | 3 | 1 | - | - | » All matches |
| DFB-Pokal | 27 | 26 | 1 | 2 | 2.395 | 13 | - | - | 1 | - | - | » All matches |
| Total | 372 | 369 | 3 | 37 | 32.422 | 121 | - | - | 3 | - | - |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 3 | 3 | - | - | 270 | - | - | - | - | - | - | » All matches |
| Total | 3 | 3 | - | - | 270 | - | - | - | - | - | - |