By Henry Burt & Jamie Spencer Lionel Messi has revealed that Argentina treated the crunch game against Mexico like a new World Cup tournament following their shock defeat to Saudi Arabia in their opening game. As a result of the earlier defeat, Argentina would have been eliminated on the spot had they lost against Mexico as well, while even a draw would have made progression to the knockout stages extremely difficult with only one more game to play. Argentina 2-0 Mexico: Player ratings – World CupLionel Messi drags Argentina to win that keeps their World Cup hopes aliveBut Messi said afterward…