The Williams sisters are entered in Zurich and I'm thinking they are not going to play, but they haven't pulled out. I bet they will pull out on Monday of next week just like Venus did this week for Filderstadt and both Venus and Davy for Moscow(in the middle of the week). Do you think their waiting to pull out is to avoid investigation of their injuries by the WTA?? I guess they can't pull out due to bereavement, but I don't know the WTA's rules about that. Can anyone shed light on this situation.