This is my top pick in this challenge. The headline is good and the picture has great action and expression. I could actually picture this in a newspaper.
I'm not sure about your headline but I don't read sports sections or magazines so I'll give you the benefit of the doubt. At any rate, this works as photojournalism well enough your headline isn't a big deal.
This is a really good, clean capture of the decisive moment (particularly if she did win). The fierce expression of concentration, the strain showing in the arms, the motion blur of the ball very effectively portray the moment. There is a nice crisp definition between the subject and the simple, dark background. Good work!