[CLBuffalo]

Scrimmage game. Fenced in field. Adjacent to the fence is a fenced in pitching area. Next to the pitching area is a fenced in batting area with a pitching machine. All are clearly visible to the umpires. Batters are in the batting area taking pitches from the machine. No batter is wearing a batting helmet. Is this allowed? I can't find any references in the Rule Book, the Case Book or the Umpires Manual. (I'm cross posting this on another forum.)