Cibulkova routed Sorana Cirstea of Romania 6-1 6-1, while seventh-seeded Italian Errani was a 6-1 6-2 winner over home hope Carla Suarez Navarro.

Errani's ninth straight victory on clay put her into a second final of the season, the 33rd-ranked Italian looking to follow up her victory in Acapulco in February.

Sunday's showdown will be third-seeded Cibulkova's first final of the year.

The 17th-ranked Slovak will have plenty of confidence having won four of their six career encounters although she did lose their only previous meeting on clay in 2007.