stepping out of box

[greymule]

In slow pitch Friday night, the pitcher threw a pitch about four feet inside. The batter simply backed up four feet and hit it over the fence. However, since both his feet were (completely) out of the box and the line was clear, it wasn't a benefit-out-the-doubt situation, so I called him out. The batter said he thought "out of the box" referred only to the front line of the box.