The top-ranked Henin will play Tatiana Golovin, who defeated Francesca Schiavone 6-0, 6-4 in the other semifinal.

The 15th-ranked Vaidisova did not go down easily.

"She pushed me at lot in the first set and I was reacting," Henin said. "I had little concentration problems." Henin dropped a set for only the second time since losing in the semifinals at Wimbledon. The Belgian star also lost a set against Golovin before defeating her in the final in Germany earlier this month.

Henin, a winner of 19 consecutive matches, has captured eight titles in 12 tournaments this season.

In the final set, Henin broke to lead 3-2. She converted the first of two break points by drilling a forehand to the baseline that Vaidisova couldn't return over the net.

Trailing 5-3, Vaidisova saved two match points to hold serve. The Czech then broke next game.

Henin had saved two break points, but she smashed a lazy lob into the net. The following point, Henin angrily threw her racket to the ground after hitting a backhand shot well wide.

"I put a lot of useless pressure on myself at several break points, for some reason," Henin said. "She, on the other hand, had one break point and converted it."

Henin finally broke for good the next game, putting Vaidisova on the defensive and ending the match with a forehand winner.

After losing the first set, Henin attacked more. Vaidisova saved two break points to stay even at 1-1. But Henin had three break points the following game, converting the second with a powerful crosscourt forehand.

Henin said it was her toughest match since losing at Wimbledon. While that encouraged Vaidisova, it couldn't make up for the loss.