Both courts start at 11am

CENTRE COURT

Sara Sorribes Tormo (ESP) v Louisa Chirico (USA)

Not Before 12.30 pm    
Tamara Korpatsch (GER) v Maria Sakkari (GRE)

Not Before 3.30 pm    
Anett Kontaveit (EST) [3] v Anna Kalinskaya (RUS)

Not Before 5.30 pm    
Rebecca Sramkova (SVK) v Carina Witthoeft (GER) [6]

COURT 1       

Xenia Knoll (SUI) / Anastasiya Komardina (RUS) v Nicole Melichar (USA) / Anna Smith (GBR) [2]

Not Before 12.30 pm    
Kiki Bertens (NED) / Johanna Larsson (SWE) [1] v Diana Marcinkevica (LAT) / Camilla Rosatello (ITA)

Amra Sadikovic (SUI) / Jil Teichmann (SUI) v Viktorija Golubic (SUI) / Nina Stojanovic (SRB) [3]

Sílvia Soler-Espinosa (ESP) / Sara Sorribes Tormo (ESP) v Nicola Geuer (GER) / Anna Zaja (GER)

Tamara Korpatsch (GER) / Ilona Kremen (BLR) v Lenka Kuncikova (CZE) / Eva Wacanno (NED)

Anna Kalinskaya (RUS) / Evgeniya Rodina (RUS) v Andrea Gamiz (VEN) / Patricia Maria Tig (ROU)

MATCH FACTS

Victory for Carina Witthoeft on Wednesday would see her equal her quarterfinal showing from last year's tournament - when she lost to eventual champion Viktorija Golubic.

Maria Sakkari has already beaten last year's showing at the same event, when she lost in the opening round to Anett Kontaveit.

Tamara Korpatsch hopes to make her third quarterfinal of the year today, having already made the last eight in Contrexeville and Andrezieux-boutheon.

Victory for Rebecca Sramkova would take her into her first quarterfinal of 2017, in her first appearance in Gstaad.

Rebecca Sramkova and Carina Witthoeft are level at one win apiece from their previous meetings, both winning on clay last year, in Biarritz and Prague respectively. None of today's three other singles match-ups have met before.