Ana Ivanovic made a second set comeback to close out a good friend in straight sets, while Dominika Cibulkova became the first big upset victim - who beat her?
WTA Staff

CINCINNATI, OH, USA - Ana Ivanovic beat Sorana Cirstea on a mixed day for seeds at the Western & Southern Open, another huge stop on both the Emirates Airline US Open Series and the Road To Singapore, the year-long journey to the BNP Paribas WTA Finals Singapore presented by SC Global.

Watch highlights, interviews and more video from Cincinnati right here on!

After storming through the first set in just 28 minutes, the No.9-seeded Ivanovic was forced to rally from behind in the second set as Cirstea built a 4-1 lead - but rally is exactly what she did, winning three love games to get back to 4-all and eventually closing out the hard-hitting Romanian, 6-1, 7-5.

Ivanovic's win over Cirstea was her WTA-leading 43rd match win of the year. She's one of three players who have hit 40 this year - Agnieszka Radwanska and Carla Suárez Navarro are tied with 40.

Two other seeds won, with No.12 seed Caroline Wozniacki beating Magdalena Rybarikova, 6-2, 6-3, and No.13 seed Flavia Pennetta beating South African qualifier Chanelle Scheepers, 6-3, 6-7(3), 6-2.

Since falling first round at the French Open, Wozniacki has rebounded in a big way - she has won 15 of 18 matches since then, a stretch that includes the 22nd WTA title of her career in Istanbul.

"I'm in a great place right now," Wozniacki said. "I've been working really hard. And this is the part of the season I really like. I love playing on grass, and I love the US Open Series. It's definitely part of the season I play well in, and winning in Istanbul a few weeks ago was definitely a confidence boost."

Is the US Open - where she reached her first Grand Slam final five years ago - one of her goals?

"The US Open is the Grand Slam I have done the best at," Wozniacki said. "I just feel so comfortable there, and I've played really well there in the past, so I'm definitely really excited for it.

"I'm in a great place both mentally and physically on the court. It's an exciting time."

But No.11 seed Dominika Cibulkova wasn't as fortunate, falling to the always-dangerous Anastasia Pavlyuchenkova, 6-3, 6-3. Cibulkova rose to the occasion several times in the match - she was a perfect three-for-three on break opportunities - but she struggled mightily on her own delivery, winning just 42% of the points when she was serving and getting broken by Pavlyuchenkova six times.

Sam Stosur, Zhang Shuai, Kirsten Flipkens, WTA Rising Stars Madison Keys and Elina Svitolina and qualifiers Karin Knapp, Pauline Parmentier and Taylor Townsend rounded out the winners on Day 1.