Yes it is the most tricky not just in management but in our picks too. It has much fun and many upsets and had personal funny situation.
I picked Sabalenka as winner in all cases and different finalists at other cases. After Sabalenka's elimination my only alive picks were Wang and Muguruza as finalists and I realised that I had chances to win only if Muguruza reaches final or even better win it all since I was the only one who would get points at this scenario at case 2.
Muguruza managed to win being a set down. Then I figured that if my other alive pick Wang (finalist at case 1) wins her group then Goerges and Muguruza will be the higher ranked semifinalists and will be seeded and case 2 can't happen !! So I needed Keys to win group which actually happened and even better Wang won match and got points for correct pick too !!! But case 1 was drawn I also feel Muguruza will be the winner of tournament which will mean that everything I needed from players happened but lost cause of draw !!
I guess something similar might have happened to others also and while it seems a bit unfair or random it is funny and it is good to have something different once in season
We shouldn't receive points from semifinalist withdraw since we supposed to get right the group winner, who was Keys
The purpose of predicting group winners is to know which players someone can pick as semifinalists. As long someone predicted Wang to be winner of semifinal #1 of case 1 he/she earns points from Wang unless that pick was not valid (had picked someone else as group winner of Azalea). It is similar situation when there is redraw due to seeded player withdrawal and we earn points from the original ranked #9 player's picks when new path meets the original. Example R1 #1 vs A and #9 vs B and the winners of these matches meet at R2. If #1 withdraws and there is redraw we will have at R1 #9 vs A and LL vs B. Someone who picked #9 as winner of R2 will still get points if #9 wins R2 no matter that came from other path.