Why do the batters run to first if it's a Out on foul ground?
I never understood why batters run to first base when they pop-up and it's gonna drop in foul ground. I mean, if the position player ends up catching it, it's an out. If the position player drops it in foul ground, the batter has to go back and finish his at bat. So why run to first base? I don't get it. 