Just one other thing which sprang to mind as well regarding Chelsea, I though they defended set pieces extremely well. They look to me to employ kind of a hybrid system where Terry essentially never moves form the central zone, but there is man marking mixed in as well. They did though attack the ball extremely well wherever it came in from, and it mirrored the desire they showed throughout the pitch. Terry though is pivotal to their set up, and given our slim chances and the fact he is banned for the second leg, I wonder if the manager may consider Hyppia as he is just about our only genuine aerial threat from set pieces and who may be able to exploit the situation.
One last last point as well. Despite the fact that I have been consistently a "pro" as far as zonal marking is concerned, like all systems clever people can find ways around it. Tim Cahill for instance will in all probability be always marked man to man whenever we play against Everton from now on. I should think this Invankovic bloke will get a bit more of the treatment which our left back gave him from one set piece at the start of the second half as well. One of the main problems though that I can see with zonal marking in the way which we set mit up, is one which you can do absolutely nothing about. If you set up in the same way for every single set piece delivery from certain areas, clever coaches will study the alignment and work out a plan. This is why if the basics aren't right, scoring goals against it is maddeningly easy.