Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 10/2026 - 06/2027 |  | Grasshopper Club Zürich |  Switzerland | Manager |
| 07/2025 - 03/2026 |  | SV Sandhausen |  Germany | Manager |
| 02/2021 - 06/2025 |  | Viktoria Köln | Germany | Manager |
| 04/2020 - 01/2021 |  | Hertha BSC | Germany | Ass. Coach |
| 07/2018 - 06/2019 |  | VfL Wolfsburg | Germany | Ass. Coach |
| 01/2018 - 06/2018 | | Viktoria Köln | Germany | Manager |
| 07/2017 - 12/2017 |  | FC St. Pauli | Germany | Manager |
| 11/2016 - 06/2017 | | FC St. Pauli | Germany | Ass. Coach |
| 09/2016 - 09/2016 |  | VfB Stuttgart | Germany | Manager |
| 07/2016 - 09/2016 | | VfB Stuttgart | Germany | Ass. Coach |
| 09/2013 - 06/2014 |  | Dynamo Dresden | Germany | Manager |
| 07/2009 - 09/2013 |  | Azerbaijan |  Azerbaijan | Ass. Coach |
| 11/2006 - 11/2006 |  | Rot-Weiss Essen | Germany | Manager |
| 07/2003 - 04/2004 |  | 1860 Munich | Germany | Ass. Coach |
National teams managed
| Season | Team | Position | |
|---|---|---|---|
| Friendlies 2013 | | Azerbaijan | Ass. Coach |
| WC Qualifiers Europe 2012/2013 | | Azerbaijan | Ass. Coach |
| Friendlies 2012 | | Azerbaijan | Ass. Coach |
| Friendlies 2011 | | Azerbaijan | Ass. Coach |
| EURO Qualifiers 2010/2011 | | Azerbaijan | Ass. Coach |
| Friendlies 2010 | | Azerbaijan | Ass. Coach |
| Friendlies 2009 | | Azerbaijan | Ass. Coach |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 04/2000 - 06/2000 |  | AC Bellinzona | Switzerland | Midfield | |
| 07/1996 - 03/2000 |  | Eintracht Frankfurt | Germany | Midfield | 16 |
| 07/1985 - 06/1996 |  | 1. FC Köln | Germany | Midfield | 6 |
| 07/1983 - 06/1985 |  | KFC Uerdingen 05 U19 | Germany | Midfield |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Europa League | 28 | 20 | 8 | 3 | 1.945 | 4 | - | - | 1 | - | - | » All matches |
| UI-Cup | 3 | 3 | - | 2 | 175 | - | - | - | 1 | - | - | » All matches |
| Bundesliga | 241 | 204 | 37 | 49 | 18.227 | 17 | 1 | 20 | 49 | 1 | 1 | » All matches |
| 2. Bundesliga | 18 | 17 | 1 | 11 | 1.269 | 2 | - | 1 | 4 | 1 | - | » All matches |
| DFB-Pokal | 18 | 16 | 2 | 7 | 1.307 | 4 | - | - | 2 | - | - | » All matches |
| Super League | 7 | 6 | 1 | 1 | 540 | - | - | - | - | - | 1 | » All matches |
| Total | 315 | 266 | 49 | 73 | 23.463 | 27 | 1 | - | 57 | 2 | 2 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Olympic Games | 2 | - | 2 | - | 28 | - | - | - | - | - | - | » All matches |
| Total | 2 | - | 2 | - | 28 | - | - | - | - | - | - |