I can tell you thought a lot about the composition with this one. The image is very balanced. The one thing to consider in teh future is negative space thoguh - it plays as important of a role in composition as the actual subject. Sometimes a really active subject like this can look even better if it's offset by a lot of negative space to the right or left side - this would also incorporate the rule of thirds. While the rule of thirds doesn't work for every image, it would probably improve this one.
This is a pretty mundane subject. This composition isn't do much to make it more interesting. Perhaps if the background had been blurred the subject would appear more bold. It does form dthe classic triangle but placed in the center of the frame it's not working as hard as it should be.
You must have used a small apeture for this - the "all over" focus is nice. Perhaps a shallower depth of field would have emphasised the sport equipment a little more, and let the image be a little brighter. I like the mix of sports though.
It's kinda like the idea I had and I have on now but I couldn't make a better photo and a better name on it. It's has a very nice settup and nice light. It's taken in a good location. It fits very nice with the title. 10