I'm sorry but when Ballack is playing, what ever formation we use, it is like playing with goddamn 10 men instead of 11, at least with Deco - even if he has the same pace of Ballack and is a little injury prone - contributes much more to the game and is more beneficial to Mikel, Ballack is just big and clumsy, should only be used in injury time when we decide to defend any small lead we have got, he is shit when attacking and slows down the midfield, can't make the midfield fluent like Essien or Deco.