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I agree with Paul. The slide at third is the best of the lot, but there are a few things that could have been done differently (either by you, the photographer, or the subject) to turn the image from okay to great.
1. Obtain a better perspective by getting lower to the ground.
2. If the 3rd baseman wouldn't have had to come off the bag to block or catch the errant throw, she would have been straddling the bag, therefore forcing you to move down the baseline a few more feet and opening up the shot so the runner is not blocked.
As it sits now, it's a decent image, but the runners arm is cut off by the 3rd Baseman and it just ruins it for me.
*plus I hate shooting the girls with those facemaks.