We've taken a look at the number of yellow and red cards League One sides have had this season, as well as the total number of fouls (via WhoScored data), and awarded half a point for a foul, one for a yellow, three for a yellow/red and five for a straight red to find the 'dirty' rating. Here's where Sunderland and their divisional rivals rank in the table.
9. Swindon Town - Dirty rating total score: 91
Fouls: 140. Yellow cards: 18. Yellow then Red cards: 1. Straight red cards: 0. Photo: Dan Mullan
10. Bristol Rovers - Dirty rating total score: 91.5
Fouls: 139. Yellow cards: 22. Yellow then Red cards: 0. Straight red cards: 0 Photo: Lewis Storey
11. Fleetwood Town - Dirty rating total score: 94
Fouls: 156. Yellow cards: 16. Yellow then Red cards: 0. Straight red cards: 0. Photo: Jacques Feeney
12. Hull City - Dirty rating total score: 96
Fouls: 150. Yellow cards: 21. Yellow then Red cards: 0. Straight red cards: 0. Photo: Pete Norton