Sadly it's a common mistake at the moment because Nadal permanently being one of the top three seems to be firmly engraved in a lot of people's minds.
It's a similar situation with David Ferrer. Four in the world, and yet no one in the game seems to quite know it.
Still, in Andy's case I don't think it's something he needs to worry about. I don't think he will be no.3 much longer. I still think the only way is up.
It was good to see Del Potro doing so well in Rotterdam. If he can keep that sort of form up I think he will be top five soon. It looks like the clay season could be interesting all around this year. Mind you, is it me, or has Berdych's perceived threat faded somewhat lately? I know he can have these spells when he just disappears (last year on the grass was an example), but no one seems to be talking about him at all now.