TIL Argentina was the catalyst behind the invention of soccer's yellow/red card system. In 1966, their captain refused an expulsion, later blaming language barriers. To prevent this kind of situation in the future, the universal color-coded system was developed so all players understand the calls.

TIL Argentina was the catalyst behind the invention of soccer's yellow/red card system. In 1966, their captain refused an expulsion, later blaming language barriers. To prevent this kind of situation in the future, the universal color-coded system was developed so all players understand the calls.