Which leagues book most?
Yellow cards per match — a rough measure of how tightly a league is refereed.
Primera B Nacional (Argentina) books more than anyone: 4,59 yellow cards a match.
| League | Bookings per match | Matches |
|---|---|---|
| 1. Primera B Nacional Argentina | 4.59 | 169 |
| 2. Liga Profesional Argentina Argentina | 4.45 | 120 |
| 3. USL Championship Stati Uniti | 4.41 | 110 |
| 4. Primera B Metropolitana Argentina | 4.39 | 122 |
| 5. MLS Next Pro Stati Uniti | 4.23 | 148 |
| 6. Serie B Brasile | 4.11 | 110 |
| 7. Torneo Federal A Argentina | 4.08 | 154 |
| 8. Major League Soccer Stati Uniti | 3.95 | 137 |
| 9. Vietnamese Super League Vietnam | 3.85 | 170 |
| 10. NPFL Nigeria | 3.39 | 244 |
| 11. J1 League Giappone | 2.72 | 182 |
Showing every competition. Major competitions only
Counted from match events, so a league appears only once its matches carry recorded cards.