Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 01/2023 - 05/2024 |  | Norwich City |  England | Manager |
| 07/2021 - 03/2022 |  | BSC Young Boys |  Switzerland | Manager |
| 07/2019 - 09/2020 |  | FC Schalke 04 |  Germany | Manager |
| 11/2015 - 01/2019 |  | Huddersfield Town | England | Manager |
| 07/2011 - 10/2015 |  | Borussia Dortmund II | Germany | Manager |
| 07/2008 - 06/2009 |  | TSG Hoffenheim U17 | Germany | Manager |
| 07/2007 - 06/2008 |  | TSG Hoffenheim U19 | Germany | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2002 - 06/2003 |  | TSG 62/09 Weinheim | Germany | Forward | |
| 10/1999 - 06/2002 |  | SV Darmstadt 98 | Germany | Forward | 11 |
| 07/1999 - 10/1999 |  | Waldhof Mannheim | Germany | Forward | 11 |
| 07/1997 - 06/1999 |  | FC Gütersloh | Germany | Forward | 20 |
| 07/1995 - 06/1997 | | FC Schalke 04 | Germany | Forward | 14 |
| 07/1991 - 06/1995 |  | 1. FSV Mainz 05 | Germany | Forward | |
| 07/1990 - 06/1991 |  | Eintracht Frankfurt | Germany | Forward |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Europa League | 5 | 1 | 4 | 1 | 127 | 1 | - | - | - | - | - | » All matches |
| Bundesliga | 30 | 2 | 28 | 1 | 692 | 2 | - | 2 | 2 | - | - | » All matches |
| 2. Bundesliga | 148 | 114 | 34 | 65 | 9.832 | 26 | - | 1 | 14 | - | - | » All matches |
| DFB-Pokal | 11 | 8 | 3 | 3 | 765 | 1 | - | - | 1 | - | 1 | » All matches |
| Regionalliga Süd (1994-2012) | 76 | 66 | 10 | 32 | 5.644 | 21 | 2 | - | 11 | - | - | » All matches |
| Total | 270 | 191 | 79 | 102 | 17.060 | 51 | 2 | - | 28 | - | 1 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WC Qualifiers CONCACAF | 4 | 3 | 1 | 2 | 196 | - | - | - | - | - | - | » All matches |
| Friendlies | 4 | 4 | - | 4 | 216 | - | - | - | - | - | - | » All matches |
| Total | 8 | 7 | 1 | 6 | 412 | - | - | - | - | - | - |