Which leagues book most?
Yellow cards per match — a rough measure of how tightly a league is refereed.
Primeira Liga (Portugal) books more than anyone: 6.09 yellow cards a match.
| League | Bookings per match | Matches |
|---|---|---|
| 1. Primeira Liga Portugal | 6.09 | 304 |
| 2. Primera División Bolivia | 5.9 | 239 |
| 3. Primera División Uruguay | 5.81 | 119 |
| 4. Primera División Costa Rica | 5.79 | 275 |
| 5. Segunda Liga Portugal | 5.75 | 306 |
| 6. Second League - Group 1 Russia | 5.71 | 214 |
| 7. Primera División Venezuela | 5.7 | 291 |
| 8. First League Russia | 5.56 | 375 |
| 9. Serie C - Girone C Italy | 5.51 | 374 |
| 10. First League North Macedonia | 5.49 | 196 |
| 11. Liga Pro Ecuador | 5.48 | 237 |
| 12. First League Bulgaria | 5.4 | 222 |
| 13. Premier League Malta | 5.34 | 160 |
| 14. Second League Bulgaria | 5.34 | 332 |
| 15. Serie B Italy | 5.32 | 388 |
| 16. La Liga Spain | 5.27 | 376 |
| 17. Primera División RFEF - Group 2 Spain | 5.25 | 377 |
| 18. First NL Croatia | 5.23 | 235 |
| 19. Premijer Liga Bosnia & Herzegovina | 5.21 | 193 |
| 20. Primera División Peru | 5.17 | 234 |
| 21. Liga de Expansión MX Mexico | 5.11 | 308 |
| 22. Serie C - Girone A Italy | 5.11 | 431 |
| 23. 1. Division Cyprus | 5.06 | 190 |
| 24. Primera A Colombia | 5.05 | 404 |
| 25. Second League - Group 2 Russia | 5.04 | 231 |
| 26. Challenger Pro League Belgium | 5.04 | 112 |
| 27. Segunda División Peru | 5.02 | 128 |
| 28. Premier League Ukraine | 5.01 | 143 |
| 29. Challenge League Switzerland | 5 | 179 |
| 30. Liga II Romania | 4.99 | 255 |
| 31. Virsliga Latvia | 4.99 | 115 |
| 32. Super League Switzerland | 4.97 | 182 |
| 33. Premier League Russia | 4.93 | 240 |
| 34. Second League - Group 3 Russia | 4.93 | 259 |
| 35. Serie C - Girone B Italy | 4.9 | 344 |
| 36. Segunda División Spain | 4.86 | 457 |
| 37. Persha Liga Ukraine | 4.84 | 147 |
| 38. Primera División RFEF - Group 1 Spain | 4.84 | 361 |
| 39. Serie B Brazil | 4.83 | 376 |
| 40. Liga Profesional Argentina Argentina | 4.83 | 492 |
Showing every competition. Major competitions only
Counted from match events, so a league appears only once its matches carry recorded cards.