MLB Looks to Protect Pitchers

[shickenbottom]

There is nothing in the rules that prevents a pitcher from wearing a helmet / skull cap type protector.

Rule 1.11 does not currently prohibit the use of a helmet. It only says that "Uniforms" are identical in Color, Style, & Trim.

Rule 1.16 does not say a pitcher or fielder should or should not, only certain players: catchers, batters, runners, and base coaches are required.

John Olerud Jr wore one while playing 1st base for years.

The only pre-requisite should be that the surface is "non-glare" if the pitcher chooses to use a helmet.