Originally Posted by sbengte
I know. Though Fed won't gain any points in Basel, I am sure he can't get to no.1 if he loses his first match there. What is the minimum round he needs to make in Basel if he needs to get #1 back ? Also is it official that Djoko won't play Basel ?
Anyway, to answer your question, if Federer were to lose to Wawrinka, and Djokovic were to win Shanghai, Federer would need to win Basel to get to #1 again, assuming Djokovic doesn't play Basel.