Red and yellow cards are now an inseparable part of modern football. At the slightest infringement, referees reach into their pockets to issue a caution or a dismissal. Few, however, know that the card system was born out of one of the most controversial matches in World Cup history—between Argentina and England.The two sides will meet again in the 2026 FIFA World Cup semi-final on Wednesday, making it the perfect time to revisit the historic encounter that changed the Laws of the Game forever.A...