Wozniacki has magnificent shotmaking if you ask me, but it's not the power kind of one. She has to rely on all court tactics to make effective her sweet topspin mix, while still able to hit pretty decent winners when she feels them, especially with the backhand. Despite not making many winners, she's still an agressive baseliner, and she doesn't only win matches by waiting the opponent's mistake, though she can do that at times also.
This list takes Sharapova into account for participating.
If Kerber wins her match tomorrow against Radwanska, Stephens and Vinci are out unless Sharapova withdraws.
just look at the table and number of possible points. if Kerber and wozniacki lose, JJ will have a healthy 300 point lead over Kerber and Woz, which mean Wozniacki will be kicked out of the race since she's only playing a MM after this tournament