Joe, Fed was defending champion but the points dropped yesterday so technically he wasn't defending any points but he dropped 1000 points yesterday. Shanghai was earlier last year - longer grass season means everything is a week later.
With Federer losing in R2 Andy stays around 130 points ahead for the time being and with every round Andy wins in Shanghai he'll gain points. Problem is he'll drop 750 before Paris because Vienna and then Valencia will drop. So the two Masters tournaments are important for Andy and then it is all about Davis Cup whether he plays at the O2 or not.
Thanks ATL, makes perfect sense. Hopefully Andy goes deep here and in Paris, although I wonder if he might be a little rusty should he come up against Djokovic.