Johnny Dangerously said:
ADodgen is a fine shooter and person. Take advantage of the offer for advice/input. Dangerously seal of approval.
Aww, you're making me blush, JD.
One thought I'd like to share (forgive me if this is over-explained, I'd rather be sure I'm clear than the other way around): One of the things that sets great shots apart from so-so shots is often the background, even moreso than the ability to stop action. Depth of field (this is a term that refers to the amount of the image that is in acceptable focus) is governed in part by your aperture — the more open it is, the less depth of field you have, limiting what's in focus. This helps to isolate your subject against a nice, pleasing out-of-focus background.
Since the widest possible aperture is a function of the lens, those of you with nicer lenses will have an easier time with this. If you don't have a nice lens with a very wide aperture, you will do well to get closer to your subjects, since DoF gets smaller the closer you are to what you're focused on.
In game situations, this means getting as close as possible to the action, but it also means not shooting when the action is across the field, or at the other end of the court. DoF is also impacted by your focal length (the bigness of the lens). So a 200mm lens will have greater DoF than a 300mm lens at the same distance.
You'll also hear this use of shallow DoF referred to as "selective focus," and next to the rule of thirds, it's probably the most direct avenue to an immediately noticeable improvement in your photos.
With regard to backgrounds, if you can't eliminate distracting backgrounds via shallow DoF, change your vantage point. Get lower and make a clean sky your background, or get higher and make the dirt or grash your background.
Take a look at the work of Mark Rebilas. He's a tremendously talented sports photographer who takes great care to have clean backgrounds. You may find his blog very instructive. http://markjrebilas.com/blog/
Some particularly good posts:
Basketball: http://markjrebilas.com/blog/?p=10889
Basketball: http://markjrebilas.com/blog/?p=8529
Baseball: http://markjrebilas.com/blog/?p=10866
Celebration: http://markjrebilas.com/blog/?p=1835
Football: http://markjrebilas.com/blog/?p=11029
I've had some questions via PM, and I promise to get to them as quickly as possible. I hope this is helpful, and please keep asking.