In tennis, the dominant player on tour never seems to hold his or her place for a sustained period.
For women especially, the rankings this year have changed almost daily.
While women players may seesaw up and down in the rankings, the winners of the grand slams have been relatively constant.
Since 2008, Kim Clijsters has won the U.S. Open twice, and Serena has claimed the title once.
Things are going to shake up this year because Serena is out of shape, Sharapova needs to vastly improve her serve, Clijsters is not even playing in the U.S. Open and new talent is emerging.
Here are the Top 10 women’s sleepers at this year’s U.S. Open.
Honorable Mention: Vania King