Wimbledon champion Petra Kvitova drops out in first round of Australian Open . Czech is defeated in straight sets by Romania 's Alexandra Dulgheru . Maria is taken to three sets by Britain 's Heather Watson .
Wimbledon champion Petra Kvitova goes out in first round of U.S. Open . Czech is beaten in straight sets by Romania 's Alexandra Dulgheru . Maria Sharapova taken to three sets by Britain 's Heather Watson .