Starting at 12 noon
Alexandra PANOVA (RUS) / Laura SIEGEMUND (GER) v Darija JURAK (CRO) / Raluca OLARU (ROU)
Not before 3pm
[Q] Ons JABEUR (TUN) v Anastasia SEVASTOVA (LAT) 
Daria KASATKINA (RUS)  v Johanna KONTA (GBR)
Kasatkina is looking to go one better than she managed last year, when she lost to Julia Goerges in the final, 6-1, 6-2 She has previously been a doubles champion here, partnering Elena Vesnina to the 2015 title.
The sixth seed has played Konta twice before - both times on hard courts. The Russian won their clash earlier this year in the Dubai Round of 16, 4-6, 7-6(6), 6-2, but Konta won their first encounter in the semifinals of Sydney, 6-3, 7-5.
Sevastova and Jabeur have met only once before, last year on the Charleston clay. The Latvian won, 7-5, 7-6(6).