It's random, so 50% chance that Davydenko will be in Roger's group. However, being in the same group doesn't mean that two players can't be in the final; most of Roger's finals have been against players that he already played at the round robin stage.
Oh Jtipson, of course......You're right!!!! I wasn't thinking about that!!!! Where is my head? For sure not over my neck!!!!! My mind, instead, is already in Shangay!!!Thanks a lot for the good news Now I'm feeling much better ciao da Firenze!!!!!!!