Stosur finding form

Quarter finals in Geneva saw one upset with qualifier Mischa Zverev knocking out American fifth seed Steve Johnson in straight sets.

Semi finals are underway and Zverev is continuing to worry the top players, taking the opening set from second seed Kei Nishikori.

The second semi will match top seed Stan Wawrinka against unseeded Andrey Kuznetsov.

Lyon semi finals have begun with second seed Jo-Wilfried Tsonga taking on Nikoloz Basilashvili.  Later top seed Milos Raonic will battle third seed Tomas Berdych.

In Strasbourg, it could be an all Australian final.  Dasha Gavrilova is a set up in her semi final against Carolina Garcia and Samantha Stosur will fancy her chances when she takes on Shuai Peng in their semi final afterwards. This is Stosur's first semi final since Roland Garros last year, evidence of her patchy form over the past 12 months.

Nurnberg will see another surprise packet from the Czech Republic pop up in a semi 

final.  Ranked 254 in the world Barbora Krejcikova has won through to a clash with Sorana Cirstea, guaranteeing that at least one of the finalists will be unseeded.

Top seed Kiki Bertens will need to beat Misaki Doi to prevent an all unseeded final.