Intro:

Caroline Wozniacki, Maria Sharapova, Sam Stosur and Sara Errani all reach the quarter finals of the Pan Pacific Open on Wednesday in Tokyo, Japan.

Script:

The Pan Pacific Open trophy still up for grabs on Wednesday as Marion Bartoli played Sara Errani.

And Bartoli clearly wanted it, but sixth seed Errani swept through to the final eight with a 3-6, 6-2, 6-2 victory.

Eighth seed Sam Stosur is also through.

The Australian beating Dominika Cibulkova 6-4 7-5.

And Maria Sharapova cruised through the opening set of her match against Lucie Safarova.

The Russian finishing up with a brutal ace.

That 6-2 7-6 victory securing Sharapova her place in the quarter-finals.

Former world number one Caroline Wozniacki joins her after surviving an early scare.

The Danish player lost the opening set to Li Na, but fought back impressively for a 4-6, 6-3, 6-4 win.