It feels like the footballing world would come to a complete standstill. Leaving one man - Lionel Scaloni - to somehow get the planet turning again. No pressure then. The prospect of Lionel Messi getting injured and forced out of the World Cup is something no-one, apart from Cristiano Ronaldo, would dare think about. It would send a shiver down the spine of Scaloni, the rest of his Argentina squad and millions of football fans around the planet. Messi has lit up this World Cup like no-one else