Nice job freezing the ball! The red batter's shirt gives this image a nice pop. The background is a little distracting (cars) but not sure what the workaround is for that. BTW - did he hit it? ;^) Best of luck to you in the challenge.
nice idea, but a bit soft. also, this really should have been cropped vertically so that the ball wouldn't be so hard to find. this is a nice perspective to shoot from; be wary, though, of your backgrounds. even though they are largely out of your control, do what you can to mitigate their impact. here, moving to the right of the ump and shooting from a higher perspective (maybe holding camera over your head and shooting down) would have removed most of the cars from the frame.
it's hard to cast a vote on this one. in terms of fitting the challenge, only the ball is really caught in motion, and it only fills a small percentage of the shot. did you try getting the batter mid-swing? i don't know if there'd be much pixel distortion, but i might have been tempted to do a square crop just isolating the top half of the batter, the ball thrower (apologies for naff terminology) and maybe a portion of the crouching bloke. and it just occured to me that i think it is suffering a little from too much to look at; doing a burn and more of a background blur (which you can do i think in advanced rules) would lessen the distraction from all the cars and stuff... 5.