Upload & Sell: Off
Looking at them from the perspective of people who might buy the shots, in my limited experience #2, #5 and #6, depending on how many times in the past I'd taken similar photos would be images that would sell and #2 would be much better if the ball was in the frame.
The question becomes "Are we taking photos to impress the editors of SI or are we hoping to recoup some of our expenses by selling to parents and relatives?"
I'd love to sell an image to SI for it's cover but no matter how great a shot of a 14-year old soccer player is, the market is the family and more than once I've heard "I really like the photo but I wish it had some of her team-mates in it,"
Or, "Do you have any of her heading the ball where she isn't making a face?"