4. Mario David on Leonel Sanchez
Chile vs Italy, 1962 World Cup
There are few matches that contain so many wince-inducing tackles that picking a 'most shocking' proves difficult. Then again, there aren't very many matches that are more commonly referred to as 'The Battle of Santiago'.
But the clash between Chile and Italy in World Cup '62 was one such encounter. It was a game that has to be seen to be believed; the British highlights introduced by David Coleman as "the most stupid, appalling, disgusting and disgraceful exhibition of football, possibly in the history of the game."
The match was rife with shocking tackles, punches and police intervention. Giorgio Ferrini was ejected after 10 minutes, and Mario David followed half an hour later for kicking Leonel Sanchez in the head in what the commentator calls "one of the most cruel-blooded and lethal tackles I have ever seen."
It says something about the 'Battle of Santiago' that the referee, Ken Aston, was actually the man that revolutionised football's disciplinary system.
Obviously harrowed by the events that took place on the field that day, it was Aston's idea to use red and yellow cards, and they have stuck since the 1970 World Cup.