Samantha Stosur admits that she lacks confidence against the elite players with strong returns. Maria Sharapova crushed the Aussie in Cincinnati, her ninth victory over Stosur in as many tries.

"I guess it's harder for me to use my real game style against someone like her who hits the ball hard and flat and skips through the court," the 10th ranked Stosur told reporters. "I think that it's possible to win and I've got to believe that, but obviously up until now I haven't been able to actually do it… It's one of those things you got to try and block out….There are a few players I've never beaten, and they all pretty much play a similar game style: Azarenka, Clijsters; never beaten Venus. There are a few players in there that are the best in the world and do that style better than anyone else."