Play on Center Court starts at 11:30 a.m. and play on Court 1 starts at 1 p.m.
[Q] Zarina DIYAS (KAZ) vs  Jelena OSTAPENKO (LAT)
Not Before 1:30 p.m.
[WC] Laura SIEGEMUND (GER) vs [WC] CoCo VANDEWEGHE (USA)
 Elina SVITOLINA (UKR) vs [Q] Marketa VONDROUSOVA (CZE)
Not Before 6:30 p.m.
Angelique KERBER (GER) vs Anett KONTAVEIT (EST)
Anastasia PAVLYUCHENKOVA (RUS) vs  Garbiñe MUGURUZA (ESP)
 Karolina PLISKOVA (CZE) vs [Q] Veronika KUDERMETOVA (RUS)
[Q] Marta KOSTYUK (UKR) vs  Caroline GARCIA (FRA)
Not Before 4:00 p.m.
Possible court change -  Raquel ATAWO (USA) / Anna-Lena GROENEFELD (GER) vs Jelena OSTAPENKO (LAT) / Olga SAVCHUK (UKR)
After suitable rest - Veronika KUDERMETOVA (RUS) / Lidziya MAROZAVA (BLR) vs  Kiki BERTENS (NED) / Demi SCHUURS (NED)
Not Before 8:00 p.m.
Possible court change - Alicija ROSOLSKA (POL) / Abigail SPEARS (USA) vs Nicole MELICHAR (USA) / Kveta PESCHKE (CZE)
Matchup between the two last remaining wildcards pits defending champion and home favorite Siegemund, who’s aiming to reach third consecutive quarterfinal in Stuttgart against the last remaining American in Vandeweghe.
Kerber is looking to reach her seven quarterfinal in seven tournaments played this season as well as the quarterfinals in Stuttgart for the fifth time in her career.
On the other side, Kontaveit is riding a five-match win streak vs. German opponents dating back to Budapest last February.
Diyas is seeking the best win of her career by ranking, as a win against Ostapenko would surpass her victories over No.7 Jankovic (2010 Moscow) and No.10 Petkovic (2015 Dubai).
Muguruza has won 10 of past 11 matches against Russian players, with only her defeat coming against Daria Kasatkina in Dubai this February, and is on a seven-match winning streak after winning Monterrey.