DALLAS, TX, USA - Jelena Jankovic recorded an emphatic quarterfinal victory at the Texas Tennis Open on Wednesday in showing she is rounding into form just in time for next week's US Open.

The second-seeded Jankovic had lost both of her previous match-ups against eighth-seeded Sorana Cirstea in dramatic three-setters, but this time was a 62 61 winner in an hour. The Serb appears to be far removed from the player who had lost eight of nine matches coming into this week and who at No.34 is ranked lower than she has been since May 2006.

"I feel that I'm playing better and better with each match," Jankovic said. "I feel more comfortable, and I'm getting my confidence back. I really enjoy my time on court, competing and battling. I think I'm on the right track. It feels good to play some good matches before the Open and get some good wins under my belt.

"It's tough to get up in the morning and train. When things are not working out, you've got to find a way to get back and the only way you're going to do that is by working hard. You can't just sit in bed and wait for things to fall from the sky. I want to play some good tennis again, and I'm trying to do that."

Next up for Jankovic is qualifier Casey Dellacqua, who rallied from a 3-0 second set deficit in ousting Aleksandra Wozniak, 64 64. Now 3-0 against the Canadian, Dellacqua is into her first career semifinal - her previous best outing being a quarterfinal showing at Hobart in January 2008.

"I've had a few good wins throughout the year but haven't been able to string matches together," the 106th-ranked Dellacqua said. "My first goal is to reach the Top 100. I was No.39 before I had my foot surgery, so if I can get somewhere around there and further, that would be great. When you're making the Slams on your ranking and not having to rely on wildcards, it's good."

Thursday's other semifinal will see third-seeded Roberta Vinci take on Bojana Jovanovski. Vinci, into her third final four of the year, was a 76(1) 62 victor over seventh-seeded Chanelle Scheepers. Jovanovski was up 64 10 on sixth-seeded Peng Shuai when Peng retired with a right shoulder injury. After winning her first career title in Baku last month, Jovanovski had lost three straight matches coming into this week.

The doubles semifinals were also set, as No.1 seeds Iveta Benesova and Barbora Zahlavova Strycova will square off with No.4 seeds Marina Erakovic and Heather Watson, and Liga Dekmeijere and Irina Falconi will play Eugenie Bouchard and Wozniak.