I like this one a lot. Nice composition, particularly how you offset his face with the dark bushes in the background. The highs are slightly blown - I don't mind this in his hair or sweathshirt as it helps convey the sunny morning feel, but some more definition in the socks (and to some extent the top of the ball) might have been nice.
really nice shot i would tone down the whiteness a little. I found a really awesome tool in adobe element 9 that you can just darken the white area of the photo