Lucie Safarova of the Czech Republic will face former French Open champion Francesca Schiavone of Italy in the opening singles of the Fed Cup semi-final between the last two champions.
The 23rd-ranked Safarova is 4-3 against the 12th-ranked Schiavone.
No. 3-ranked Petra Kvitova will play the second singles for the host against Sara Errani on an indoor hard court at the CEZ Arena.
In Sunday's reverse singles, Kvitova first plays Schiavone before Safarova takes on Errani.
In the doubles, French Open doubles champions Andrea Hlavackova and Lucie Hradecka will play against the Italian pair of Errani and Roberta Vinci.
The hosts are defending champions while Italy won the title in 2006, 2009 and 2010, when it stormed past the Czechs 5-0 in the semis.