Players who cover their mouths when confronting an opponent will be immediately sent off at this summer’s World Cup, under new, tougher sanctions. This significant rule change comes after Real Madrid forward Vinicius Junior reported racial abuse from Benfica’s Gianluca Prestianni, who covered his mouth during a Champions League match in February. Vinicius was visibly upset by the comment and promptly informed the referee, prompting a 10-minute halt in play in line with UEFA regulations . Any similar incident at the upcoming tournament will now result in a red card, following a unanimous agreement by football’s lawmakers, the International Football Association Board (IFAB), in Vancouver on Tuesday.…