Which leagues book most?
Yellow cards per match — a rough measure of how tightly a league is refereed.
Primera División (Bolivia) books more than anyone: 6.62 yellow cards a match.
| League | Bookings per match | Matches |
|---|---|---|
| 1. Primera División Bolivia | 6.62 | 333 |
| 2. Primera División Uruguay | 6.42 | 171 |
| 3. Liga de Expansión MX Mexico | 5.9 | 344 |
| 4. Liga Pro Ecuador | 5.88 | 239 |
| 5. II Liga - East Poland | 5.78 | 299 |
| 6. USL League One United States | 5.75 | 169 |
| 7. Segunda Liga Portugal | 5.74 | 307 |
| 8. Liga Nacional Guatemala | 5.73 | 286 |
| 9. Primeira Liga Portugal | 5.68 | 304 |
| 10. Primera División Venezuela | 5.65 | 275 |
| 11. Primera B Chile | 5.62 | 278 |
| 12. First League North Macedonia | 5.59 | 155 |
| 13. Serie C - Girone B Italy | 5.57 | 355 |
| 14. Primera A Colombia | 5.54 | 446 |
| 15. Segunda División Peru | 5.52 | 149 |
| 16. Primera División Peru | 5.51 | 342 |
| 17. Serie C Brazil | 5.51 | 210 |
| 18. Primera División Costa Rica | 5.49 | 240 |
| 19. Serie C - Girone A Italy | 5.38 | 380 |
| 20. Challenge League Switzerland | 5.37 | 180 |
| 21. First League Bulgaria | 5.35 | 282 |
| 22. Liga Nacional Honduras | 5.35 | 195 |
| 23. Serie C - Girone C Italy | 5.35 | 373 |
| 24. Second League Bulgaria | 5.23 | 297 |
| 25. USL Championship United States | 5.21 | 468 |
| 26. Primera División Chile | 5.21 | 239 |
| 27. I Liga Poland | 5.18 | 304 |
| 28. Serie B Italy | 5.18 | 388 |
| 29. Segunda División Spain | 5.18 | 461 |
| 30. La Liga Spain | 5.17 | 371 |
| 31. Liga II Romania | 5.16 | 251 |
| 32. Premijer Liga Bosnia & Herzegovina | 5.16 | 194 |
| 33. Liga Profesional Argentina Argentina | 5.15 | 576 |
| 34. Super League Switzerland | 5.13 | 179 |
| 35. Primera B Colombia | 5.12 | 265 |
| 36. Primera División RFEF - Group 1 Spain | 5.1 | 369 |
| 37. Liga 3 Portugal | 5.06 | 279 |
| 38. Serie A Brazil | 5.04 | 372 |
| 39. 1. Deild Iceland | 5.02 | 131 |
| 40. MLS Next Pro United States | 4.99 | 238 |
Showing every competition. Major competitions only
Counted from match events, so a league appears only once its matches carry recorded cards.