Maybe you don't know what the rule is, but it is not in effect with one guy on base, and no it does not allow you to turn a DP if the hitter doesn't hustle. If the hitter stands at the plate he is already out and there is no chance at a DP. Right, so why can you do that on a ground ball but not a fly ball? I don't necessarily think the rule should go away, just that it is dumb because it exists for this reason and in my opinion there is no good answer to my basic question: Why are you allowed to turn a DP on a ground ball but not a fly ball. Also, if you don't want your runners in no man's land then don't hit an infield fly. Back in game 3 Braun hit a ball that sort of left Yelich in no man's land, so should there be some rule to prevent that from happening? You misinterpreted what I said. Because it doesn't exist with only one on you ARE allowed to turn a DP on a fly ball if the hitter doesn't hustle. That seems to be your main point, again you are allowed in that situation or any flyball when a guy doesn't go back. It goes into effect when there is more on so that you can't double off people who are not the hitter who had nothing to do with it. You'd be doubling two runners off, not "double playing" the hitter. The tradeoff is that yes when more on than one you can't, that is what it is. Simplest answer to Why that you're all about here is simply because in a groundball situation there is no ability to play trickery with runners, in this situation there is.