Excellent image. The receiving player though is completely relaxed and not in the usual position for expecting a serve, which contrasts with the great tension in the server, as well as the title. That's just nitpicking though, great shot.
very nice. This could sell as an inspirational poster that hangs in elementary school classrooms or something. I like how you burned the edges to centralize the focus on the server.
Very clean and sharp work on the main subject. The burn tool is a bit obvious, not too over-the-top or anything, just not that subtle. Haven't decided if I like the wide-angle view or not...would be nice to see more of the main subject I think and move him off-center a little. All JMO of course. :) Good luck in the challenge.