I thought this was such an interesting concept, and original, too. Great backdrop. I think the lighting was too harsh, which could also be why the ball seems just short of tack sharp. Nevertheless a nice change from the lemons and such, as nice as some of those yellows are.
The implied motion in this image is truly clever. I also am impressed with the choice of having the tee in focus rahter than the shell of the golf ball.
The dimples of the ball don't seem very in focus to me. I keep getting stuck looking at the bright dimple on the right, as well. Great composition, and I like the white contrasting throughout the image.