Maybe if Spain had started David De Gea in goal, the 2010 World Cup champs would not have flamed out so quickly in Brazil. Or did you already forget how Iker Casillas made a mess of things in Spain’s 5-1 opening group play loss to Holland? Once upon a time De Gea didn’t inspire much confidence with his current club, Manchester United, either. De Gea was, as they like to say, a vampire goalkeeper: afraid of crosses. These days, however, De Gea is among the best in the world and he showed it during Sunday’s 3-0 win over Liverpool. De Gea was so good that he even merited a compliment from United manager Louis Van Gaal, whose habit of staring at a reporter before answering a question can be intimidating, obnoxious and comical. “I’m proud we have a clean sheet but that is also because David De Gea has superb reactions,” van Gaal said. “We scored fantastic goals — one-touch — and I’m very pleased with that. In spite of the goals, we gave a lot of chances away. That was every time we gave unnecessary passes away and that is how we have to improve.” You see, van Gaal…