Compositionally, everything in your frame is leading the eyes out of the picture. While that may be your intent, the overall effect is that the viewer may not look at the picture long, and if they do, it tends to feel off-balanced. If the boy was in the lower right corner, and teh gentleman in white was where he is, you would have a strongly balanced shot, I think. As it is, though, the boy is near the edge of the frame, facing out, and the man in white is walking out. Those in the upper right, while not as distinguishable, also look like they are getting ready to run out of the frame as well.
Technically, you have captured the action well. The saturation of the greens is a bit much, to me, and I (personal opinion) think that bringing the greens and yellows down, would make this shot have a much more natural appearance.
Good work and best to you in future challenges.
Karma
I like real pictures like this as opposed to the contrived 'studio' type. However, a much tighter crop on the subject would give a lot more impact. All that background only detracts from what's going on. Good luck with it. :)