Caroline Wozniacki at the U.S. Open

If not for Melanie Oudin, Caroline Wozniacki might have been the woman everyone was buzzing about at the U.S. Open. The 19-year-old is ranked No. 9 and has more wins than any other woman on the tour this season. Her next match, of course, is against Oudin in the quarterfinals. Here's a look at the woman who'll try to stop the Oudin Express on Wednesday.