Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 04/2022 - 06/2024 |  | Persija Jakarta |  Indonesia | Manager |
| 08/2019 - 12/2019 |  | APOEL Nikosia |  Cyprus | Manager |
| 01/2019 - 06/2019 |  | Hannover 96 |  Germany | Manager |
| 12/2013 - 08/2018 |  | Ferencvárosi TC |  Hungary | Manager |
| 07/2011 - 01/2012 |  | Al Hilal |  Saudi Arabia | Manager |
| 07/2009 - 10/2010 |  | Gençlerbirliği |  Turkey | Manager |
| 03/2007 - 05/2008 |  | Borussia Dortmund | Germany | Manager |
| 10/2004 - 01/2007 |  | Hamburger SV | Germany | Manager |
| 01/2003 - 10/2004 |  | Hamburger SV II | Germany | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/1998 - 06/2001 | | Hamburger SV | Germany | Midfield | 10 |
| 07/1996 - 06/1998 |  | SSC Bari |  Italy | Midfield | 10 |
| 10/1994 - 06/1996 |  | Eintracht Frankfurt | Germany | Midfield | 20 |
| 03/1994 - 10/1994 |  | Lazio Roma | Italy | Midfield | |
| 02/1994 - 03/1994 | | Eintracht Frankfurt | Germany | Midfield | |
| 07/1991 - 02/1994 | | Lazio Roma | Italy | Midfield | |
| 07/1990 - 06/1991 | | Hamburger SV | Germany | Midfield | |
| 07/1986 - 06/1990 |  | BFC Dynamo | Germany | Forward | |
| 08/1983 - 06/1986 |  | Hansa Rostock | Germany | Forward |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 8 | 8 | - | - | 720 | 2 | - | - | - | - | - | » All matches |
| Champions League Qual. | 1 | - | 1 | - | 3 | - | - | - | - | - | - | » All matches |
| Europa League | 2 | 1 | 1 | - | 113 | - | - | - | - | - | - | » All matches |
| Cup Winners Cup | 4 | 4 | - | - | 390 | - | - | - | - | - | - | » All matches |
 | Oberliga | 146 | 140 | 6 | 28 | 12.310 | 43 | 3 | - | 14 | - | - | » All matches |
| FDGB-Pokal | 26 | 23 | 3 | 9 | 2.116 | 10 | - | - | 1 | - | - | » All matches |
| Bundesliga | 102 | 63 | 39 | 23 | 5.937 | 8 | 1 | 18 | 10 | - | - | » All matches |
| DFB-Pokal | 7 | 5 | 2 | 1 | 476 | 3 | - | - | - | - | - | » All matches |
| Serie A | 78 | 67 | 11 | 23 | 5.824 | 9 | - | - | 7 | - | 2 | » All matches |
| Serie B | 31 | 21 | 10 | 15 | 1.810 | 4 | - | - | - | - | - | » All matches |
| Coppa Italia | 9 | 8 | 1 | 4 | 644 | 3 | - | - | - | - | 1 | » All matches |
| Total | 414 | 340 | 74 | 103 | 30.343 | 82 | 4 | - | 32 | - | 3 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WC Qualifiers Europe | 7 | 2 | 5 | - | 408 | 1 | - | - | - | - | - | » All matches |
| Friendlies | 28 | 17 | 11 | 11 | 1.659 | 5 | 1 | - | 1 | - | - | » All matches |
| EURO | 4 | 1 | 3 | - | 150 | - | - | - | 1 | - | - | » All matches |
| EURO Qualifiers | 8 | 7 | 1 | 3 | 606 | 2 | - | - | - | - | - | » All matches |
| Total | 47 | 27 | 20 | 14 | 2.823 | 8 | 1 | - | 2 | - | - | ||
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
| U21 EURO Qualifiers | 5 | 4 | 1 | 3 | 338 | 2 | - | - | - | - | - | » All matches |
| Total | 5 | 4 | 1 | 3 | 338 | 2 | - | - | - | - | - |