5. Esteban Alvarado – 2011
Alvarado is a massive star in his native Costa Rica. The goalkeeper enjoyed a prosperous career in Europe. He also represented his nation on a number of occasions and featured in their World Cup squad. A fiery personality, he spent his longest spell in Europe with Dutch giants AZ Alkmaar. They played Ajax in a cup game when a fan assaulted him on the field.

A drunk 19-year-old charged toward him and tried to kick him. But he fell over and didn’t account for Alvarado’s response. The Costa Rican showed no mercy and kicked his would-be-attacker twice as he was on the ground. Then, the referee showed Alvarado a red card. The Alkmaar players walked off the field in protest. In the end, the game was replayed.