I was watching the two big games in the Champions League this week and both of the games were spoiled by the red cards (the card in the City-Barca game was a clear red as it was a clear clear goal scoring opportunity whereas the Arsenal-Bayern game was not so clear cut).
It got me thinking;
1: when was the rule around clear goal scoring opportunities introduced and
2: was there a case that made them introduce it? I'm thinking something like when they clamped down on tackles from behind because it was this kind of tackle that forced Marco Van Basten into early retirement or Lampard's goal in the 2010 World Cup which got a debate on goal line technology going.
This rule was first issued to the Football League referees prior to the 1982-83 season.
FIFA instructed its referees to send off for this kind of foul prior to the 1990 World Cup.
IFAB(International Football Association Board) incroporated this law in 1997.
The concept gained notoriety in association football after an infamous incident in the 1980 FA Cup Final when Willie Young of Arsenal committed a deliberate foul on Paul Allen of West Ham, when Allen had a clear run at goal. As the laws of the game stood, the referee (George Courtney) could only award West Ham a free kick, which he did. This provoked a national debate on deliberate fouls that denied opponents the chance to score a goal.