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Venus Williams defeated Elena Dementieva 6-1, 7-6 today at Wimbledon, dispatching her toughest opponent of the tournament so far and advancing to the seventh Wimbledon final of her career.

She could meet her sister in Saturday's final; Serena Williams plays Zheng Jie in the other semifinal later today. The Williams sisters have met in six Grand Slam finals, with Serena winning five of them.

Venus Williams overpowered Dementieva in today's first set, looking just as dominant as she has throughout the championship. In the second set Dementieva settled down and gave Williams a run for her money, and when it went to a tiebreak both players got a little sloppy. But Williams ultimately showed that she was the better player -- and the best player in the world on grass -- by winning the tiebreak 7-3 and getting one match away from her fifth Wimbledon title.

The world's No. 1 player is out of Wimbledon at the hands of the world's No. 131 player.

Ana Ivanovic was upset by China's Zheng Jie in the most surprising result yet in this championship. Coming off her first Grand Slam title at the French Open, Ivanovic was one of the favorites entering Wimbledon, but Jie made surprisingly quick work of her, 6-1, 6-4.

As a doubles player Jie has won championships at both Wimbledon and the Australian Open, but this is the biggest win of her career as a singles player.

"This is a tough match because she has a good serve and a big forehand, so I just tried to give her the backhand more," said Jie afterward. "I'm surprised I won the match."