I think its all been said above, try a few out for feel etc.,
If you ask the question here which is better - Canon/Nikon you'll get the usual half and half debate/banter so its all down to what you like.
Have a look at a few mags ie Digital Photo etc., as they always have reviews. I was in the same boat a couple of years ago, I did the feel test, then checked out the right ups in mags (around 8 mags) would have been cheaper to just get a camera first off
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Then armed with all your new found knowledge post back up on here saying I'm now gonna buy XXXX, does anyone know of any deals and hopefully you will bombarded with all the nice TPF folk saying where you can get the most for ya money.
Regarding your sport shooting, you might find that you may be better going for a buy now pay later deal that will give you a bit of breathing space with your money ie
Camera and kit lens say £450 + £300-500 for a decent quick zoom, total £750-1000 but you don't fork out for a year which will give you time to start snapping right away, but in the mean time you've got 11 months to save the rest. HTH