Which leagues book most?
Yellow cards per match — a rough measure of how tightly a league is refereed.
Serie C (Brazil) books more than anyone: 6.33 yellow cards a match.
| League | Bookings per match | Matches |
|---|---|---|
| 1. Serie C Brazil | 6.33 | 215 |
| 2. Primera División Venezuela | 6.27 | 222 |
| 3. Primera B Chile | 5.97 | 251 |
| 4. Liga Pro Ecuador | 5.91 | 242 |
| 5. Liga Nacional Guatemala | 5.87 | 213 |
| 6. II Liga - East Poland | 5.81 | 302 |
| 7. Liga Panameña de Fútbol Panama | 5.81 | 202 |
| 8. Primera División Uruguay | 5.81 | 175 |
| 9. First League North Macedonia | 5.81 | 190 |
| 10. Primera División Bolivia | 5.69 | 265 |
| 11. Super League 1 Greece | 5.53 | 237 |
| 12. Liga Nacional Honduras | 5.52 | 197 |
| 13. Primera A Colombia | 5.47 | 448 |
| 14. Primera División Peru | 5.4 | 333 |
| 15. Serie A Brazil | 5.39 | 378 |
| 16. Serie B Brazil | 5.36 | 380 |
| 17. Primera B Colombia | 5.33 | 301 |
| 18. Serie C - Girone C Italy | 5.28 | 379 |
| 19. Second League Bulgaria | 5.24 | 301 |
| 20. Liga 3 Portugal | 5.22 | 289 |
| 21. USL League One United States | 5.22 | 195 |
| 22. Serie B Italy | 5.21 | 387 |
| 23. Primera Nacional Argentina | 5.19 | 662 |
| 24. Primera División Chile | 5.15 | 240 |
| 25. Primeira Liga Portugal | 5.14 | 303 |
| 26. Segunda División Peru | 5.12 | 168 |
| 27. Segunda Liga Portugal | 5.12 | 303 |
| 28. Liga de Expansión MX Mexico | 5.12 | 242 |
| 29. First Division Ireland | 5.11 | 184 |
| 30. First League Bulgaria | 5.11 | 282 |
| 31. Liga 2 Indonesia | 5.09 | 255 |
| 32. Serie C - Girone B Italy | 5.08 | 378 |
| 33. Primera División RFEF - Group 2 Spain | 5.06 | 377 |
| 34. I Liga Poland | 5.05 | 305 |
| 35. UEFA Youth League International | 5.03 | 164 |
| 36. 2. Liga Austria | 5.02 | 238 |
| 37. USL Championship United States | 5.02 | 420 |
| 38. FNL Czechia | 5 | 237 |
| 39. Liga 1 Indonesia | 4.97 | 313 |
| 40. Erovnuli Liga Georgia | 4.93 | 177 |
Showing every competition. Major competitions only
Counted from match events, so a league appears only once its matches carry recorded cards.