I'm guessing they want what was shown in the video called as a violation?  For those without access, bases loaded, ground ball to F5 who throws home with the ball beating the runner by 5-10 feet.  Runner more or less ran right along the foul line, making little effort to avoid being tagged (no slide, no deviating from path) and when the catcher reached to tag him, the ball came free when the glove and runner made contact.  Oh boy what a ____show that would be to call 2 outs there, although it wo