There have been several walkovers and retirements lately because of an intestinal virus that is apparently making its way through the tour. The latest to suffer from it is Caroline Wozniacki, the number 1 seed in Beijing. Wozniacki is resting now, and will play her second round (she has a first-round bye) against Sara Errani on Wednesday.
If Wozniacki is well enough to play and defeats Errani, she will play either Petra Kvitova or Kaia Kanepi, who will meet in one of the more interesting second round contests. Should Wozniacki win her third round match, she would become the number 1 player in the world.