re: First baseman had wrong foot on the bag restricting his ability to stretch for the throw

quote:

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He should set his right foot AGAINST the bag with his body in a semi crouch allowing him flexibility to move in either direction

So he should stand in a position ready to be trucked by the runner.

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Nope. He should have his right foot and not his left against the corner of the bag, not straddling the bag. The runner is irrelevant at that point.