Azarenka moves on after Safina retires
Top-seeded Victoria Azarenka reached the semifinals of the Andalucia Tennis Experience after Dinara Safina retired with an injury.
Azarenka was leading 3-1 in the first set when Safina first had treatment on her lower back. The injury eventually forced her to quit the match while trailing 5-1.
Azarenka will face eighth-seeded Sara Errani after the Italian beat Alexandra Dulgheru of Romania 6-2, 6-2.
Svetlana Kuznetsova easily advanced by beating Lara Arruabarrena-Vecino 6-1, 6-2. The second-seeded Russian plays Irina-Camelia Begu of Romania, who defeated Klara Zakopalova 6-3, 6-3.