Top seed Dinara Safina and defending champion Sara Errani raced into the semi-finals of the Banka Koper Slovenia Open today.

World number one Safina, making her first tournament appearance since winning only one game in her Wimbledon semi-final defeat by Venus Williams, eased past Maria Elena Camerin 6-3 6-0 in Portoroz.

Italy's Errani, the fifth seed, was also an easy winner as she ended the run of Croatian wild card Petra Martic 6-1 6-1.

Errani next faces Stefanie Voegele, who defeated Rossana De Los Rios 6-1 6-1, while Alberta Brianti saw off Camille Pin 6-3 6-2 to set up a meeting with Safina in the last four.