So lets say Xavi gets marked out of the game, if it happens, which still might not occur with Poulsen marking him. What does one do with Iniesta and the others, and with basicaly nixing one of your own men out of the game offensively?
Xavi is a great player, but even when he has poor games, Barca can still do well.
So what do you do with the other guys?
If you play total defense against them, you won't score but they probably eventually will.