revenuee said:and what's your shutter speed?
i've gotten usable shots ... but very few - if you are shooting basketball or volleyball ... you will not freeze the ball, you'll be lucky if you can see the ball.
a motion shot CAN be desirable in the right context ... BUT few agencies really care about you're artistic vision ... sports is about the action more then it is about the art.
I generally get 1/160 fine but I have to anticipate really well. Lacrosse has worked especially well.