PARIS, May 29 (Xinhua) -- World No. 3 Venus Williams became the first major upset when she was beaten by 29th seeded Hungarian Agnes Szavay in straight sets at the French Open tennis tournament on Friday.

    The 6-0, 6-4 defeat in the third round was Venus' most lopsided Grand Slam loss since 2001, and also her fourth time loss in the past five years at Roland Garros.

Venus Williams of the United States serves against Hungary's Agnes Szavay during the 3rd round competition of women's singles at the French Open tennis tournament at Roland Garros in Paris, France, May 29, 2009. Williams lost to Szavay 0-6, 4-6.

"I'm used to beating people 6-0. I'm not used to my shot not going in and losing a set 6-0," said Williams. "So it completely was foreign ground for me."

    "She hung in there. She played really well, but I definitely have to attribute that loss to, you know, to me not being able to execute what I wanted to on the court," Williams said. "It seemed every shot I tried, somehow, it found a way to go out."