Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 11/2019 - 06/2021 |  | Arsenal FC |  England | Ass. Coach |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 08/2011 - 06/2018 | | Arsenal FC | England | Defence | 4 |
| 08/2006 - 08/2011 |  | Werder Bremen |  Germany | Defence | 29 |
| 07/2003 - 08/2006 |  | Hannover 96 | Germany | Defence | 29 |
| 07/2001 - 06/2003 |  | Hannover 96 U19 | Germany | Defence | |
| 07/1999 - 06/2001 |  | Hannover 96 U17 | Germany | Defence |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 54 | 53 | 1 | - | 4.804 | 2 | - | - | 1 | - | - | » All matches |
| Champions League Qual. | 7 | 7 | - | - | 660 | - | - | - | 1 | - | - | » All matches |
| Europa League | 29 | 29 | - | 1 | 2.574 | 1 | - | 1 | 2 | - | - | » All matches |
| Europa League Qual. | 2 | 2 | - | - | 180 | - | - | - | - | - | - | » All matches |
| Bundesliga | 221 | 220 | 1 | 7 | 19.662 | 19 | - | 8 | 9 | - | 2 | » All matches |
| DFB-Pokal | 22 | 22 | - | 3 | 1.932 | 2 | - | - | 2 | 1 | - | » All matches |
| League Cup | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Premier League | 156 | 152 | 4 | 6 | 13.613 | 6 | - | 2 | 11 | - | 2 | » All matches |
| FA Cup | 19 | 18 | 1 | 2 | 1.641 | 4 | - | - | 1 | - | - | » All matches |
| League Cup | 5 | 5 | - | - | 510 | - | - | - | - | - | - | » All matches |
| FA Community Shield | 2 | 2 | - | 1 | 122 | - | - | - | - | - | - | » All matches |
| Total | 518 | 511 | 7 | 20 | 45.788 | 34 | - | - | 27 | 1 | 4 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 19 | 17 | 2 | - | 1.665 | - | - | - | - | - | - | » All matches |
| WC Qualifiers Europe | 15 | 15 | - | - | 1.350 | 2 | - | - | - | - | - | » All matches |
| Friendlies | 44 | 42 | 2 | 7 | 3.547 | 1 | - | 2 | 2 | - | - | » All matches |
| Confederations Cup | 5 | 5 | - | - | 480 | 1 | - | - | - | - | - | » All matches |
| EURO | 6 | 6 | - | - | 540 | - | - | - | - | - | - | » All matches |
| EURO Qualifiers | 15 | 15 | - | 1 | 1.271 | - | - | - | - | - | - | » All matches |
| Total | 104 | 100 | 4 | 8 | 8.853 | 4 | - | - | 2 | - | - | ||
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
| U21 Friendlies | 2 | 2 | - | 1 | 136 | - | - | - | - | - | - | » All matches |
| U21 EURO Qualifiers | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Total | 3 | 3 | - | 1 | 226 | - | - | - | - | - | - | ||
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
| U20 Friendlies | 2 | 1 | 1 | - | 107 | - | - | - | - | - | - | » All matches |
| Total | 2 | 1 | 1 | - | 107 | - | - | - | - | - | - |