MOSCOW, May 13 (RIA Novosti) - Russia's Alisa Kleybanova broke former world number one Venus Williams' serve seven times to send her packing from the Madrid Open in a thrilling second round match.

The unseeded 19-year-old from Moscow outlasted her opponent, ranked third in the world, 6-3, 3-6, 7-5 in a match that lasted 2 hours and 13 minutes.

In a post-match interview Williams was quoted by the tour website as saying: "It wasn't a good first set for me. I was really flat, and that gave her confidence. After that she was playing for the win."

On Friday, Russian world No. 1 Dinara Safina knocked Williams out of the Italian Open at the semifinal stage on the way to her first title of the year.