I shoot girls club volley ball (my daughters play). It takes practice, lots of practice to get a few decent shots that stand out - the parents of the kids like the photos but I doubt anyone outside of the club gets too excited about the images (I like them).
You have good exposure in your photo, so the gym must have decent light - consider yourself lucky in that respect.
I tend to edit the photos prior to posting, tossing out photos - I guess I am old enough to have sat through kodak slide shows where every shot is displayed on a screen in a living room. I prefer to see the top shots than every shot.
I liked this shot in your flilckr - it stuck out of the thumbnails for me
http://www.flickr.com …/in/set-72157629183521650![]()
Below is a sample of one of the games I shot of a serve - taken with a manual focus Nikkor 180 at 2.8 on a Canon XSI.

, but I 

