The number of yellow and Red cards accumulated by a player in his career is a sign of how rough he plays and how "dirty" his football is. For Defenders it gets even more difficult because a wrong tackle in the box can give away a penalty.
Watch the top 10 Dirtiest players in football since 2009.
10. Benedikt Howedes
9. Nemanja Vidic
8. Aritz Auriz
7. Ander Herrera
6. Masimo Ambrosini
5. Fernando Navarro
4. Laurent Kosceilny
3. Lee Cattermole
2. Martin Demichelis
1. Sergio Ramos