Ivanovic Splits with Tennis Coach

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LONDON (AP) - Former No. 1 Ana Ivanovic has split with coach Craig Kardon.

The Serb had hired Kardon on a trial basis in February to replace Sven Groeneveld. Kardon is a former coach of 18-time Grand Slam champion Martina Navratilova.

Ivanovic dropped from No. 8 to No. 13 in this week's WTA rankings after her French Open title defense ended in the fourth round.

"I'd like to thank Craig for all his hard work," Ivanovic said Tuesday on her Web site. "He's a great guy and I enjoyed working with him."

She will use temporary coaches for Eastbourne and Wimbledon later this month.

The 21-year-old Ivanovic had a stellar 2008, winning the French Open and holding the No. 1 ranking for nine weeks.