nice idea, but needs work in post production. first, don't be afraid to crop. all that stuff that's not part of the action needs to go. secondly, there are a ton of tools that you can use to bring out the image, to reveal the details in the shadows. you're on the right track, but you really have to work at it if your going to get the most out of what your camera can do...
Ok. Technical shortcomings apart (blur, hard exposure due to Sun, busy background etc.), this is a pretty neat picture in the sense of the competitive spirit it depicts. Well done. 7/10.
Shot is overall out of focus and dark. Need more light in the face area since that is the focus point in this pic. Might try upping your ISO and using a faster shutter speed.