Jeff I really like the first two. The other two suffer, in my opinion, from not showing the faces of the subjects. Also in the last one I would like to see it straightened so the background is level.
The second shot might be improved somewhat by a looser crop (did I really say that?) to impart more of an impression of height. As it is, for all we know he might be eight inches off the ground. ;-)
I often crop my soccer shots to emphasize or even to exaggerate the height of the jumps. Here are a couple of examples.
Nill
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