Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 02/2025 - 02/2026 |  | Blackburn Rovers |  England | Manager |
| 05/2023 - 03/2024 |  | Watford FC | England | Manager |
| 03/2022 - 10/2022 |  | Beşiktaş |  Turkey | Manager |
| 07/2021 - 02/2022 |  | West Bromwich Albion | England | Manager |
| 10/2020 - 06/2021 |  | Barnsley FC | England | Manager |
| 07/2019 - 07/2020 |  | LASK |  Austria | Manager |
| 07/2018 - 08/2018 |  | Apollon Smyrnis |  Greece | Manager |
| 10/2016 - 02/2017 |  | VfL Wolfsburg |  Germany | Manager |
| 07/2015 - 10/2016 |  | VfL Wolfsburg II | Germany | Manager |
| 07/2014 - 11/2014 |  | 1. FC Nuremberg | Germany | Manager |
| 07/2013 - 06/2014 | | VfL Wolfsburg II | Germany | Manager |
| 11/2011 - 06/2013 |  | Hannover 96 II | Germany | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2008 - 09/2009 |  | Hannover 96 | Germany | Defence | 25 |
| 01/2008 - 06/2008 | | Hannover 96 | Germany | Defence | 4 |
| 03/2007 - 12/2007 |  | Bayern München II | Germany | Defence | |
| 07/2005 - 12/2007 |  | Bayern Munich | Germany | Defence | 25 |
| 07/2003 - 06/2005 |  | Werder Bremen | Germany | Defence | 25 |
| 07/2002 - 06/2003 |  | Racing Strasbourg |  France | Defence | |
| 07/2001 - 06/2002 |  | RC Lens | France | Defence | 25 |
| 01/2001 - 06/2001 | | Racing Strasbourg | France | Defence | |
| 10/1998 - 12/2000 | | RC Lens | France | Defence | |
| 01/1998 - 09/1998 |  | Crystal Palace | England | Defence | |
| 07/1993 - 01/1998 | | Racing Strasbourg | France | Defence |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 15 | 15 | - | - | 1.265 | 3 | 2 | 1 | 3 | - | 1 | » All matches |
| Europa League | 16 | 14 | 2 | 1 | 1.259 | 2 | 1 | - | 1 | - | - | » All matches |
| UI-Cup | 11 | 9 | 2 | 1 | 814 | - | - | - | 3 | - | 1 | » All matches |
| Bundesliga | 113 | 111 | 2 | 8 | 9.741 | 8 | 3 | 7 | 17 | 2 | - | » All matches |
| DFB-Pokal | 18 | 18 | - | 1 | 1.791 | 4 | 1 | - | 5 | - | - | » All matches |
| Regionalliga Süd (1994-2012) | 7 | 7 | - | - | 630 | 2 | 1 | - | 1 | - | - | » All matches |
| League Cup | 3 | 3 | - | - | 270 | 1 | 1 | - | 1 | - | - | » All matches |
| Premier League | 13 | 13 | - | 2 | 1.077 | - | - | - | 3 | 1 | - | » All matches |
| FA Cup | 3 | 3 | - | - | 270 | - | - | - | 2 | - | - | » All matches |
| Ligue 1 | 205 | 190 | 15 | 17 | 16.909 | 8 | - | - | 41 | - | - | » All matches |
| Coupe de France | 16 | 15 | 1 | 4 | 1.424 | - | - | - | 5 | - | - | » All matches |
| Coupe de la Ligue | 13 | 12 | 1 | - | 1.201 | - | - | - | - | - | 1 | » All matches |
| Total | 433 | 410 | 23 | 34 | 36.651 | 28 | 9 | 8 | 82 | 3 | 3 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | U21 Friendlies | 2 | 2 | - | - | 180 | - | - | - | - | - | - | » All matches |
| U21 EURO Qualifiers | 5 | 5 | - | 1 | 386 | 1 | - | - | - | - | - | » All matches |
| Total | 7 | 7 | - | 1 | 566 | 1 | - | - | - | - | - |