Barbora Strycova takes on Mona Barthel in the J&T Banka Prague Open semifinals, while Ana Konjuh and Jelena Ostapenko complete their darkness-delayed quarterfinal.

CENTRE COURT

Starts 11am CET

[Q] Mona BARTHEL (GER) vs Barbora STRYCOVA (CZE) [3]

Not before 1pm

To finish 6-3, 4-6, 1-1

Ana KONJUH (CRO) [7] vs Jelena OSTAPENKO (LAT)

Lucie HRADECKA (CZE) / Katerina SINIAKOVA (CZE) [1] vs Anna-Lena GROENEFELD (GER) / Kveta PESCHKE (CZE) [2]

Not before 3.30pm

Kristyna PLISKOVA (CZE) vs Ana KONJUH (CRO) [7] or Jelena OSTAPENKO (LAT)