Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2016 - 06/2024 |  | Liverpool FC |  England | Defence | 32 |
| 05/2009 - 06/2016 |  | FC Schalke 04 |  Germany | Defence | 32 |
| 07/2009 - 06/2011 |  | FC Schalke 04 II | Germany | Defence | |
| 07/2008 - 06/2010 |  | FC Schalke 04 U19 | Germany | Defence | |
| 07/2006 - 06/2008 |  | FC Schalke 04 U17 | Germany | Defence | |
| 07/2004 - 06/2006 |  | FC Schalke 04 U15 | Germany | Defence |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 54 | 46 | 8 | 2 | 4.292 | 3 | - | 1 | 8 | - | - | » All matches |
| Champions League Qual. | 4 | 3 | 1 | - | 278 | - | - | - | - | - | - | » All matches |
| Europa League | 19 | 18 | 1 | 1 | 1.602 | 2 | - | - | 2 | - | 1 | » All matches |
| Europa League Qual. | 2 | 2 | - | - | 180 | - | - | - | - | - | - | » All matches |
| UEFA Super Cup | 1 | 1 | - | - | 120 | - | - | - | - | - | - | » All matches |
| Bundesliga | 194 | 175 | 19 | 14 | 15.787 | 17 | - | 11 | 22 | 1 | - | » All matches |
| DFB-Pokal | 16 | 11 | 5 | 2 | 1.076 | 2 | - | - | - | - | - | » All matches |
| Franz-Beckenbauer-Supercup | 2 | 2 | - | - | 210 | - | - | - | - | - | - | » All matches |
| Regionalliga West | 4 | 4 | - | 1 | 355 | 1 | - | - | - | - | - | » All matches |
| Premier League | 150 | 135 | 15 | 9 | 12.057 | 9 | - | 5 | 18 | - | - | » All matches |
| FA Cup | 5 | 4 | 1 | 1 | 378 | - | - | - | - | - | - | » All matches |
| League Cup | 10 | 10 | - | 4 | 799 | - | - | - | 1 | - | - | » All matches |
| FA Community Shield | 2 | 1 | 1 | - | 143 | 1 | - | - | - | - | - | » All matches |
| Total | 463 | 412 | 51 | 34 | 37.277 | 35 | - | 17 | 51 | 1 | 1 | ||
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
| U19 Bundesliga West | 17 | 16 | 1 | 3 | 1.391 | 10 | - | - | - | 1 | - | » All matches |
| Total | 17 | 16 | 1 | 3 | 1.391 | 10 | - | - | - | 1 | - | ||
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
| U17 Bundesliga West | 20 | 18 | 2 | 1 | 1.650 | - | - | - | - | - | - | » All matches |
| Total | 20 | 18 | 2 | 1 | 1.650 | - | - | - | - | - | - |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 3 | 3 | - | 1 | 243 | 1 | - | - | - | - | - | » All matches |
| WC Qualifiers Africa | 5 | 5 | - | 1 | 360 | - | - | - | 1 | - | - | » All matches |
| Friendlies | 15 | 6 | 9 | 1 | 769 | - | - | - | 1 | - | - | » All matches |
 | Africa Cup Qual. | 3 | 2 | 1 | 1 | 167 | - | - | - | - | - | - | » All matches |
| Total | 26 | 16 | 10 | 4 | 1.539 | 1 | - | - | 2 | - | - |