I cannot emphasize enough how much the outfielders should be playing in for that AB. There is nothing wrong with the positioning. If your goal is to maximize the chance that you make the out, you bring in the outfielders. The only reason they normally play as far back as they do is because you're worried about doubles. In that specific game situation, you have the additional reason that if they somehow still hit it in front of you, if you are playing close you might prevent them from sending the winning run home from second. Add on top of that the fact that Rocchio is a slap hitter who makes a living slapping balls in front of outfielders. Sam appears to have badly misplayed the ball but even if he hadn't, it's just a ball that found a hole.