Svetlana Kuznetsova defeated Spain's Anabel Medina Garrigues in the first singles match on Sunday to help Russia retain the Fed Cup title.

Ranked seventh in the world, Kuznetsova helped the Russians clinch their fourth title in five years with a hard-fought 5-7 6-3 6-4 victory in two hours, 39 minutes.

"It's amazing to win another Fed Cup for my team," said Kuznetsova, who is unbeaten in Fed Cup singles matches since 2004. "It's been a tough year with a lot of ups and downs."

Kuznetsova and ninth-ranked Vera Zvonareva had posted victories on Saturday to give Russia a commanding 2-0 lead.

In the doubles match, Russia completed the 4-0 sweep behind Ekaterina Makarova and Elena Vesnina, who posted a 6-2 6-1 triumph over the duo of Nuria Llagostera Vives and Carla Suarez Navarro.

It was Russia's fourth cup triumph in five years. Spain, who have now lost five of their six meetings against Russia, have not won the title since 1998.