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Dementieva stunned by American teen Oudin

American teenager Melanie Oudin (oo-DAN) has upset No. 4-seeded Elena Dementieva (deh-MENT-yeh-vah) in the second round of the U.S. Open.

The 70th-ranked Oudin, of Marietta, Ga., came back to stun Dementieva 5-7, 6-4, 6-3 Thursday in Arthur Ashe Stadium.

Dementieva was the 2004 runner-up at the U.S. Open and French Open and won the singles gold medal at the Beijing Olympics last year.

The 17-year-old Oudin, meanwhile, never had won a U.S. Open match until this week. She never had won a Grand Slam match until reaching the fourth round at Wimbledon this year.

Now Oudin will face three-time major champion Maria Sharapova or another U.S. teenager, Christina McHale, in the third round.