All courts start 11am CET
After 2 Men's Singles
Kiki BERTENS (NED)  vs Andrea PETKOVIC (GER)
Risa OZAKI (JPN) vs Kristina MLADENOVIC (FRA) 
Richel HOGENKAMP (NED) vs Mandy MINELLA (LUX)
After 1 Men's Singles
Carina WITTHOEFT (GER) vs Coco VANDEWEGHE (USA) 
[Q] Andrea HLAVACKOVA (CZE) vs [LL] Asia MUHAMMAD (USA)
Kirsten FLIPKENS (BEL) vs Madison BRENGLE (USA)
[Q] Miyu KATO (JPN) vs Evgeniya RODINA (RUS)
[Q] Tamara KORPATSCH (GER) vs Ana KONJUH (CRO) 
Kristyna PLISKOVA (CZE)  vs Anett KONTAVEIT (EST)
Aliaksandra SASNOVICH (BLR) vs [WC] Anna KALINSKAYA (RUS)
Natalia VIKHLYANTSEVA (RUS) vs [Q] Cornelia LISTER (SWE)
Dominika CIBULKOVA (SVK) / Kirsten FLIPKENS (BEL) vs [WC] Kelly VERSTEEG (NED) / Erika VOGELSANG (NED)
After 1 Men's Doubles
Timea BABOS (HUN) / Andrea HLAVACKOVA (CZE)  vs Varvara LEPCHENKO (USA) / Lesia TSURENKO (UKR)
Defending champion CoCo Vandeweghe has played the Ricoh Open four times, won it twice (in 2014, as a qualifier, and 2016) and owns a 15-2 career record here. Her only losses on the Dutch grass have come to Arantxa Rus (in qualifying in 2011) and Kiki Bertens (in the 2015 quarterfinals).
Kristyna Pliskova and Anett Kontaveit have played just once before - also on grass, in the quarterfinals of the Nottingham ITF $75,000 event in 2014. Pliskova won 6-3, 7-6(5).
18-year-old wildcard Anna Kalinskaya, who upset Caroline Garcia in Kuala Lumpur in February, is playing her fourth WTA Tour main draw. Her first-round encounter against Aliaksandra Sasnovich will also be her first ever senior match on grass.
Evgeniya Rodina is returning to a tournament that turned her year around in 2016. Coming into the grass season, her win-loss record had been just 4-18 - but a quarterfinal run here (beating Jelena Jankovic en route) helped the Russian double her winning total on grass (with an 8-2 record).
Kristina Mladenovic, last year's runner-up, has reached four WTA Tour finals in 2017 - the joint leading total with Elina Svitolina. Three have been at Premier level or better - a feat only Simona Halep and Caroline Wozniacki share.