So played a bit of rivals and got hit by hard delay (defenders stopping their runs when you switch to them). Was getting killed on every through ball. So I thought, sod it - I'll just stick my fastest strikers at CB on 1 or 2 chem. Those two mopped up every through ball and were intercepting most dangerous passes despite a slight pause when switching to them. I've come to the conclusion that it does not matter who you throw at CB (after losing 3 in a row with PM Puyol and base Capita and now winning 3 in a row with strikers at CB).