The use of blue and purple cards is being trialed by FIFA, with one already used in the Under-20 World Cup tournament.
A blue card is set to be introduced in professional football as part of sin-bin trials, marking the first new colour of card widely used in 50 years....read full article ...
Managers have been spotted wielding cards at referees for the first time in football history at the U20 World Cup. Red and yellow cards are commonplace in the game, having first been introduced at the ...