Now that Melanie Oudin's Cinderella run through the U.S. Open has ended, you might have assumed the 17-year-old could go back home to her normal life. But it may not be so simple for the American tennis sensation.

Oudin's parents are in the midst of an ugly divorce proceeding in which her father has accused her mother of cheating on him with Melanie's tennis coach, Sports Illustrated reported on its Web site Wednesday night.

As Melanie's rise to fame brought attention to the family, Oudin's mother, Leslie, apparently sensed that their divorce records might go public. Newsday has learned she filed a motion with the Cobb County (Ga.) Superior Court two days ago, asking that all documents be sealed from the public.

She cited "embarrassment,'' a spokesman for the court clerk told Newsday Thursday morning, and the judge granted the motion.

However, it was too late, as reporters from Sports Illustrated already had seen the public records, which were available on the Cobb County Superior Court's Web site. That is, until Judge Robert E. Flournoy III ordered the records sealed Wednesday at Leslie's request.

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What can be viewed now is that Melanie's father, John, filed for divorce from his wife, Leslie, on July 24, 2008.

Sports Illustrated, having seen the filings before they were sealed, reported that John Oudin cited adultery as the grounds for divorce. Leslie Oudin denied the charge in a filing Aug. 12, 2008. One year and two days later, John Oudin expanded on the allegation of infidelity, specifically saying his wife had cheated on him with Melanie's coach, Brian de Villiers.

According to the SI report, John Oudin says in the sworn statement, "I didn't initial [sic] take any action regarding my early suspicions because I didn't want to believe my wife was having an affair with my daughter's tennis coach . . . On Dec. 29, 2007, I confronted my wife about whether she was having an affair with Brian de Villiers. I confronted Brian de Villiers separately. My wife and Brian de Villiers both admitted to me they were having an affair.''

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Lawyers for both parties did not immediately return calls seeking comment.