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The above Joel Grimes videos cover a bit of how he does sport photos with two gridded lights facing 45 degrees at the subject on either side from behind. He has an overhead key/fill light just above his camera. You'd need to use your 3 lights in those positions generally speaking, and of course to get the white background, you'd need to light that up separately if you want it blown out white, but it doesn't necessarily have to be blown out white (and isn't in this video).
I agree with the above post about enhancing the macro contrast in photoshop, lightening up the highlights, and to a lesser degree burning darker here and there.
On that page, there are a few more worthwhile videos as well. Seems like the studio sports photos these days use this type of lighting particularly.