Kim Clijsters: Image: Dewey Nicks/NYT
There is an amazing interactive photo essay with slow motion video of these powerful female tennis players here. Well worth seeing.
Click on thumbnails for large format slideshow.
Left to right - Elena Dementieva [Russia,] Samantha Stosur [Australia,] Kim Clijsters [Belgium,] Vera Zvonareva [Russia]
All images: Dewey Nicks/NYT