Originally Posted by Rogiman
Actually it's 1/4, since Federer's group is determined, therefore the calculation applies to Ljubo and Roddick only.
I know nothing about this so I really shouldn't be writing in here but...
I don't think it's pre-determined whether Feds gets put in the Blue? Group or the Red? Group so you still have to factor in that probability when determining the probability of the other guys being in his group.
And no I don't think Fed and Nadal can meet... Feds goes in Blue and Nadal in Red or vice-versa, No?!